Rev.4.2_01 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8355/56/57/58 Series The S-8355/56/57/58 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8355/57 Series) and a PWM/PFM switching control circuit (S-8356/58 Series). With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a high output current. The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an excellently designed error amplifier and a phase compensation circuits. S-8356/58 Series features a PWM/PFM switching controller that can switch the operation to a PFM controller with a duty ratio is 15% under a light load to prevent a decline in the efficiency due to the IC operating current. Features * Low voltage operation : Startup at 0.9 V min. (IOUT = 1 mA) guaranteed * Low current consumption : During operation 25.9 A (3.3 V, 100 kHz, typ.) During shutdown 0.5 A (max.) * Duty ratio : Built-in PWM/PFM switching control circuit (S-8356/58 Series) 15 to 83% (100 kHz models) 15 to 78% (250 kHz, 300 kHz, and 600 kHz models) * External parts : Coil, diode, capacitor, and transistor * Output voltage : Selectable in 0.1 V steps between 1.5 and 6.5 V (for VDD / VOUT separate types) Selectable in 0.1 V steps between 2.0 and 6.5 V (for other than VDD / VOUT separate types) * Output voltage accuracy : 2.4% * Oscillation frequency : 100 kHz, 250 kHz, 300 kHz, 600 kHz selectable * Soft start function : 6 ms (100 kHz, typ.) * Shutdown function Applications * Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs * Power supplies for audio equipment such as portable CD / MD players * Constant voltage power supplies for cameras, VCRs, and communications devices * Power supplies for microcomputers Packages Package Name SOT-23-3 SOT-23-5 SOT-89-3 6-Pin SNB(B) Package Drawing Code Tape Reel MP003-A MP005-A UP003-A BD006-A MP003-A MP005-A UP003-A BD006-A MP003-A MP005-A UP003-A BD006-A Seiko Instruments Inc. 1 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Block Diagrams (1) S-8357/58 Series B, H and F Types (Without Shutdown Function) (2) S-8357/58 Series B, H, F and N Types (With Shutdown Function) VOUT Oscillation circuit EXT Oscillation circuit IC internal power supply + - PWMcontrol circuit or PWM / PFM swiching control circuit Soft start built-in reference power supply VOUT PWMcontrol circuit or PWM / PFM swiching control circuit EXT Phase compensation circuit Soft start built-in reference power supply VSS IC internal power supply + - Phase compensation circuit VSS ON / OFF Figure 1 Figure 2 (3) S-8357/58 Series E, J, G and P Types (VDD / VOUT Separate Type) (4) S-8355/56 Series K, L, M and Q Types (With Shutdown Function, VDD / VOUT Separate Type) VDD Oscillation circuit EXT VOUT IC internal power supply PWMcontrol circuit or PWM / PFM swiching control circuit Soft start built-in reference power supply Phase compensation circuit EXT + - VSS Oscillation circuit IC internal power supply PWMcontrol circuit or PWM / PFM swiching control circuit + - Soft start built-in reference power supply Phase compensation circuit ON / OFF Figure 3 2 VOUT VDD Figure 4 Seiko Instruments Inc. VSS STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Product Name Structure The control system, product types, output voltage, and packages for the S-8355/56/57/58 Series can be selected at the user's request. Please refer to the "3. Product Name" for the definition of the product name and "4. Product Name List" for the full product names. 1. Function List (1) PWM Control Products Table 1 Product Name Switching Frequency kHz Shutdown Function VDD / VOUT Separate Type S-8355KxxMC 100 Yes Yes 250 Yes Yes 300 Yes Yes S-8355LxxMC, S-8355LxxBD S-8355MxxMC, S-8355MxxBD S-8355QxxMC, S-8355QxxBD S-8357BxxMC S-8357BxxMA S-8357BxxUA 600 Yes Yes 100 100 100 Yes - - - - - S-8357ExxMC 100 - Yes 300 Yes - 300 - Yes 250 Yes - 250 - Yes 600 Yes - 600 - Yes S-8357FxxMC, S-8357FxxBD S-8357GxxMC, S-8357GxxBD S-8357HxxMC, S-8357HxxBD S-8357JxxMC, S-8357JxxBD S-8357NxxMC, S-8357NxxBD S-8357PxxMC, S-8357PxxBD Package SOT-23-5 SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5 SOT-23-3 SOT-89-3 SOT-23-5 SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) Seiko Instruments Inc. Application Applications requiring variable output voltage and a shutdown function Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring a shutdown function Applications not requiring a shutdown function Applications not requiring a shutdown function Applications in which output voltage is adjusted by external resistor Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage and a thin coil Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage with an external resistor and a thin coil Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage with an external resistor and a thin coil 3 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (2) PWM / PFM Switching Control Products Table 2 Product Name Switching Frequency kHz Shutdown Function VDD / VOUT Separate Type S-8356KxxMC 100 Yes Yes 250 Yes Yes 300 Yes Yes S-8356LxxMC, S-8356KxxBD S-8356MxxMC, S-8356MxxBD S-8356QxxMC, S-8356QxxBD S-8358BxxMC S-8358BxxMA S-8358BxxUA 600 Yes Yes 100 100 100 Yes - - - - - S-8358ExxMC 100 - Yes 300 Yes - 300 - Yes 250 Yes - 250 - Yes 600 Yes - 600 - Yes S-8358FxxMC, S-8358FxxBD S-8358GxxMC, S-8358GxxBD S-8358HxxMC, S-8358HxxBD S-8358JxxMC, S-8358JxxBD S-8358NxxMC, S-8358NxxBD S-8358PxxMC, S-8358PxxBD Package SOT-23-5 SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5 SOT-23-3 SOT-89-3 SOT-23-5 SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) SOT-23-5, 6-Pin SNB(B) Application Applications requiring variable output voltage and a shutdown function Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring variable output voltage, a shutdown function, and a thin coil Applications requiring a shutdown function Applications not requiring a shutdown function Applications not requiring a shutdown function Applications in which output voltage is adjusted by external resistor Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage and a thin coil Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage with an external resistor and a thin coil Applications requiring a shutdown function and a thin coil Applications requiring variable output voltage with an external resistor and a thin coil 2. Package and Function List by Product Type Table 3 Series Name Type S-8355 Series, S-8356 Series K, L, M, Q (Shutdown function + VDD / VOUT separate type) K = 100 kHz, L = 250 kHz, M = 300 kHz, Q = 600 kHz B, H, F (Normal product) B = 100 kHz, H = 250 kHz, F = 300 kHz N (Normal product) N = 600 kHz E, J, G, P (VDD / VOUT separate type) E = 100 kHz, J = 250 kHz, G = 300 kHz, P = 600 kHz B, H, F (Normal product) B = 100 kHz, H = 250 kHz, F = 300 kHz N (Normal product) N = 600 kHz E, J, G, P (VDD / VOUT separate type) E = 100 kHz, J = 250 kHz, G = 300 kHz, P = 600 kHz S-8357 Series S-8358 Series 4 Package Name (Abbreviation) Shutdown Function Yes / No VDD / VOUT Separate Type Yes / No MC / BD Yes Yes MA / UA MC / BD No Yes No MC / BD Yes No MC / BD No Yes MA / UA MC / BD No Yes No MC/BD Yes No MC / BD No Yes Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. Product Name S-835 x x xx xx - xxx - Tx IC direction in tape specifications *1 T2 : SOT-23-3, SOT-23-5, SOT-89-3 TF : 6-Pin SNB(B) Product code *2 Package code MA : SOT-23-3 MC : SOT-23-5 UA : SOT-89-3 BD : 6-Pin SNB(B) Output voltage 15 to 65 (e.g. When the output voltage is 1.5 V, it is expressed as 15.) Product type B : Normal product, (S-8357/58 Series) H : Normal product, (S-8357/58 Series) F : Normal product, (S-8357/58 Series) N : Normal product, (S-8357/58 Series) E : VDD / VOUT separate type, (S-8357/58 Series) J : VDD / VOUT separate type, (S-8357/58 Series) G : VDD / VOUT separate type, (S-8357/58 Series) P : VDD / VOUT separate type, (S-8357/58 Series) K : With shutdown function + VDD / VOUT separate type, (S-8355/56 Series) L : With shutdown function + VDD / VOUT separate type, (S-8355/56 Series) M : With shutdown function + VDD / VOUT separate type, (S-8355/56 Series) Q : With shutdown function + VDD / VOUT separate type, (S-8355/56 Series) fOSC = 100 kHz fOSC = 250 kHz fOSC = 300 kHz fOSC = 600 kHz fOSC = 100 kHz fOSC = 250 kHz fOSC = 300 kHz fOSC = 600 kHz fOSC = 100 kHz fOSC = 250 kHz fOSC = 300 kHz fOSC = 600 kHz Control system 5 or 7 : PWM control 6 or 8 : PWM / PFM switching control *1. Refer to the taping specifications. *2. Refer to the Table 4 to Table 13 in the "4. Product Name List". Seiko Instruments Inc. 5 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4. Product Name List (1) S-8355 Series Table 4 Output S-8355KxxMC S-8355LxxMC S-8355MxxMC S-8355MxxBD voltage Series Series Series Series 1.5 V - S-8355L15MC-NCA-T2 - - 1.8 V S-8355K18MC-NAD-T2 - S-8355M18MC-MCD-T2 S-8355M18BD-MCD-TF 2.0 V S-8355K20MC-NAF-T2 S-8355L20MC-NCF-T2 S-8355M20MC-MCF-T2 - 3.1 V S-8355K31MC-NAQ-T2 - S-8355M31MC-MCQ-T2 - 3.2 V - - S-8355M32MC-MCR-T2 - 3.3 V S-8355K33MC-NAS-T2 - - - 3.4 V - - S-8355M34MC-MCT-T2 S-8355M34BD-MCT-TF 5.0 V S-8355K50MC-NBJ-T2 - S-8355M50MC-MDJ-T2 - 5.5 V - - S-8355M55MC-MDO-T2 - Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 5 Output S-8355QxxMC S-8355QxxBD voltage Series Series 1.5 V S-8355Q15MC-OWA-T2 S-8355Q15BD-OWA-TF 2.8 V - S-8355Q28BD-OWN-TF 3.1 V - S-8355Q31BD-OWQ-TF 3.4 V - S-8355Q34BD-OWT-TF 5.0 V S-8355Q50MC-OXJ-T2 S-8355Q50BD-OXJ-TF Remark Please contact the SII marketing department for products with an output voltage other than those specified above. (2) S-8356 Series Output S-8356KxxMC S-8356MxxMC S-8356MxxBD voltage Series Series Series 1.5 V - S-8356M15MC-MEA-T2 - 1.8 V S-8356K18MC-NED-T2 S-8356M18MC-MED-T2 S-8356M18BD-MED-TF 3.0 V - S-8356M30MC-MEP-T2 - 3.3 V S-8356K33MC-NES-T2 - - 5.0 V S-8356K50MC-NFJ-T2 S-8356M50MC-MFJ-T2 S-8356M50BD-MFJ-TF Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 7 Output S-8356QxxMC S-8356QxxBD voltage Series Series 1.8 V S-8356Q18MC-OYD-T2 - 3.3 V S-8356Q33MC-OYS-T2 - 3.7 V - S-8356Q37BD-OYW-TF 5.0 V S-8356Q50MC-OVJ-T2 S-8356Q50BD-OVJ-TF Remark Please contact the SII marketing department for products with an output voltage other than those specified above. 6 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (3) S-8357 Series Table 8 Output S-8357BxxMC S-8357BxxMA S-8357BxxUA S-8357ExxMC voltage Series Series Series Series 1.5 V - - - S-8357E15MC-NKA-T2 2.0 V - - - S-8357E20MC-NKF-T2 2.5 V S-8357B25MC-NIK-T2 - - - 2.6 V S-8357B26MC-NIL-T2 - - - 2.7 V S-8357B27MC-NIM-T2 - - - 2.8 V S-8357B28MC-NIN-T2 - - - 3.0 V S-8357B30MC-NIP-T2 S-8357B30MA-NIP-T2 - - 3.3 V S-8357B33MC-NIS-T2 S-8357B33MA-NIS-T2 S-8357B33UA-NIS-T2 - 3.6 V S-8357B36MC-NIV-T2 - - - 4.8 V S-8357B48MC-NJH-T2 - S-8357B48UA-NJH-T2 - 5.0 V S-8357B50MC-NJJ-T2 S-8357B50MA-NJJ-T2 S-8357B50UA-NJJ-T2 S-8357E50MC-NLJ-T2 5.2 V S-8357B52MC-NJL-T2 - - - 5.4 V S-8357B54MC-NJN-T2 - - - 6.0 V S-8357B60MC-NJT-T2 - - - Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 9 Output S-8357FxxMC S-8357GxxMC S-8357HxxMC S-8357JxxMC voltage Series Series Series Series 2.5 V - - - S-8357J25MC-NOK-T2 3.0 V - - S-8357H30MC-NMP-T2 - 3.1 V - - S-8357H31MC-NMQ-T2 - 3.2 V S-8357F32MC-MGR-T2 - - - 3.3 V S-8357F33MC-MGS-T2 - - - 3.5 V - - S-8357H35MC-NMU-T2 - 3.6 V - - S-8357H36MC-NMV-T2 - 5.0 V S-8357F50MC-MHJ-T2 S-8357G50MC-MJJ-T2 S-8357H50MC-NNJ-T2 S-8357J50MC-NPJ-T2 5.2 V S-8357F52MC-MHL-T2 - - - Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 10 Output S-8357JxxBD S-8357NxxMC voltage Series Series 3.3 V - S-8357N33MC-O2S-T2 5.0 V S-8357J50BD-NPJ-TF S-8357N50MC-O3J-T2 Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Seiko Instruments Inc. 7 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (4) S-8358 Series Table 11 Output S-8358BxxMC S-8358BxxMA S-8358BxxUA S-8358ExxMC voltage Series Series Series Series 2.0 V - - - S-8358E20MC-NSF-T2 2.3 V S-8358B23MC-NQI-T2 - - - 2.5 V S-8358B25MC-NQK-T2 - - - 2.6 V S-8358B26MC-NQL-T2 - - - 2.7 V S-8358B27MC-NQM-T2 - - - 3.0 V S-8358B30MC-NQP-T2 - - - 3.1 V S-8358B31MC-NQQ-T2 - - - 3.2 V S-8358B32MC-NQR-T2 - - - 3.3 V S-8358B33MC-NQS-T2 - S-8358B33UA-NQS-T2 - 3.5 V S-8358B35MC-NQU-T2 - - - 3.6 V S-8358B36MC-NQV-T2 - - - 3.8 V S-8358B38MC-NQX-T2 - - - 4.0 V S-8358B40MC-NQZ-T2 - - - 5.0 V S-8358B50MC-NRJ-T2 S-8358B50MA-NRJ-T2 S-8358B50UA-NRJ-T2 S-8358E50MC-NTJ-T2 6.0 V S-8358B60MC-NRT-T2 - - - Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 12 Output S-8358FxxMC S-8358GxxMC S-8358HxxMC S-8358JxxMC voltage Series Series Series Series 2.3 V - - S-8358H23MC-NUI-T2 - 2.6 V S-8358F26MC-MKL-T2 - - - 2.7 V S-8358F27MC-MKM-T2 - - - 3.0 V - - S-8358H30MC-NUP-T2 - 3.3 V S-8358F33MC-MKS-T2 - S-8358H33MC-NUS-T2 S-8358J33MC-NWS-T2 5.0 V S-8358F50MC-MLJ-T2 S-8358G50MC-MNJ-T2 S-8358H50MC-NVJ-T2 S-8358J50MC-NXJ-T2 5.3 V S-8358F53MC-MLM-T2 - - - Remark Please contact the SII marketing department for products with an output voltage other than those specified above. Table 13 Output S-8358NxxMC voltage Series 5.3 V S-8358N53MC-O7M-T2 Remark Please contact the SII marketing department for products with an output voltage other than those specified above. 8 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Pin Configurations Table 14 S-8357/58 Series B, H and F Types (Without shutdown function, VDD / VOUT non-separate type) SOT-23-3 Top view Pin No. 1 2 3 1 2 Symbol VOUT VSS EXT Pin Description Output voltage pin and IC power supply pin GND pin External transistor connection pin 3 Figure 5 Table 15 S-8355/56 Series K, L, M and Q Types (With shutdown function, VDD / VOUT separate type) SOT-23-5 Top view 5 1 4 2 3 Pin No. Symbol Pin Description 1 2 VOUT VDD 3 ON / OFF 4 5 VSS EXT Output voltage IC power supply pin Shutdown pin "H": Normal operation (Step-up operating) "L": Step-up stopped (Entire circuit stopped) GND pin External transistor connection pin Figure 6 Table 16 S-8357/58 Series B, H, F and N Types (With shutdown function, VDD / VOUT non-separate type) Pin No. Symbol Pin Description Shutdown pin "H": Normal operation (Step-up operating) "L": Step-up stopped (Entire circuit stopped) 2 VOUT Output voltage pin and IC power supply pin NC*1 3 No connection 4 VSS GND pin 5 EXT External transistor connection pin *1. The NC pin indicates electrically open. 1 ON / OFF Table 17 S-8357/58 Series E, J, G and P Types (Without shutdown function, VDD / VOUT separate type) Pin No. Symbol Pin Description 1 VOUT Output voltage pin 2 VDD IC power supply pin NC*1 3 No connection 4 VSS GND pin 5 EXT External transistor connection pin *1. The NC pin indicates electrically open. Seiko Instruments Inc. 9 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Table 18 S-8357/58 Series B, H and F Types (Without shutdown function, VDD / VOUT non-separate type) SOT-89-3 Top view Pin No. 1 2 3 1 Symbol VSS VOUT EXT Pin Description GND pin Output voltage pin and IC power supply pin External transistor connection pin 3 2 Figure 7 6-Pin SNB(B) Top view 6 5 4 Table 19 S-8355/56 Series K, L, M and Q Types (With shutdown function, VDD / VOUT separate type) Pin No. 2 3 Bottom view 1 2 3 Pin No. 1 6 5 4 Connect the heatsink of back side at shadowed area to the board, and set electric potential open or VDD. However, do not use it as the function of electrode. Figure 8 ON / OFF Table 20 S-8357/58 Series B, H, F and N Types (With shutdown function, VDD / VOUT non-separate type) *1 *1. Pin Description Shutdown pin "H": Normal operation (Step-up operating) "L": Step-up stopped (Entire circuit stopped) 2 VOUT Output voltage pin 3 VDD IC power supply pin 4 EXT External transistor connection pin NC*1 No connection 5 6 VSS GND pin *1. The NC pin indicates electrically open. 1 1 Symbol Symbol NC*1 Pin Description No connection Shutdown pin 2 "H": Normal operation (Step-up operating) ON / OFF "L": Step-up stopped (Entire circuit stopped) 3 VOUT Output voltage pin and IC power supply pin External transistor connection pin 4 EXT *1 NC 5 No connection 6 VSS GND pin *1. The NC pin indicates electrically open. Table 21 S-8357/58 Series E, J, G and P Types (Without shutdown function, VDD / VOUT separate type) Pin No. Symbol Pin Description NC*1 1 No connection 2 VOUT Output voltage pin 3 VDD IC power supply pin 4 EXT External transistor connection pin *1 NC No connection 5 6 VSS GND pin *1. The NC pin indicates electrically open. 10 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Absolute Maximum Ratings Table 22 Item Symbol VOUT pin voltage ON / OFF pin voltage VDD pin voltage EXT pin voltage VOUT VON / OFF *1 *2 (Ta = 25C unless otherwise specified) Absolute maximum rating Unit VSS - 0.3 to VSS + 12 V VDD VEXT B, H, F, N type Others V VSS - 0.3 to VSS + 12 VSS - 0.3 to VDD + 0.3 VSS - 0.3 to VOUT + 0.3 80 150 250 500 90 - 40 to + 85 - 40 to + 125 V V V mA mW mW mW mW C C IEXT SOT-23-3 PD SOT-23-5 SOT-89-3 6-Pin SNB(B) Operating ambient temperature Topr Storage temperature Tstg *1. With shutdown function *2. For VDD / VOUT separate type Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Power dissipation (PD) [mW] EXT pin current Power dissipation VSS - 0.3 to VSS + 12 600 SOT-89-3 SOT-23-5 400 SOT-23-3 6-Pin SNB(B) 200 0 0 150 100 50 Ambient temperature (Ta) [C] Figure 9 Power Dissipation of The Packages (Before Mounting) Seiko Instruments Inc. 11 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Electrical Characteristics (1) 100 kHz Product (B, E and K Types) Table 23 (1 / 2) Item Symbol Condition Output voltage VOUT - Input voltage Operation start voltage Oscillation start voltage VIN VST1 VST2 Operation holding voltage VHLD Current consumption 1 ISS1 Current consumption 2 ISS2 - IOUT = 1 mA No external parts, Voltage applied to VOUT IOUT = 1 mA, Judged by decreasing VIN voltage gradually VOUT = VOUT(S) x 0.95 S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 VOUT = VOUT(S) + 0.5 V S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Current consumption during shutdown (With shutdown function) EXT pin output current Line regulation Load regulation Output voltage temperature coefficient Oscillation frequency Maximum duty ratio PWM / PFM switching duty ratio (For S-8356/58 Series) ON / OFF pin input voltage (With shutdown function) 12 (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit VOUT(S) VOUT(S) VOUT(S) V 2 x 0.976 x 1.024 - - 10 V 2 - - 0.9 V 2 - - 0.8 V 1 0.7 - - V 2 - - - - - - - - - - - - 14.0 19.7 25.9 32.6 39.8 47.3 5.6 5.8 5.9 6.1 6.3 6.4 23.4 32.9 43.2 54.4 66.4 78.9 11.1 11.5 11.8 12.1 12.5 12.8 A A A A A A A A A A A A 1 1 1 1 1 1 1 1 1 1 1 1 - - 0.5 A 1 - 4.5 - 6.2 - 7.8 - 10.3 - 13.3 - 16.1 - 18.9 9.5 12.6 15.5 19.2 23.8 27.4 30.3 - - - 8.9 - 12.3 - 15.7 - 20.7 - 26.7 - 32.3 - 37.7 19.0 25.2 31.0 38.5 47.6 54.8 60.6 30 30 - - - - - - - - - - - - - - 60 60 mA mA mA mA mA mA mA mA mA mA mA mA mA mA mV mV 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 ISSS VON / OFF = 0 V IEXTH VEXT = VOUT - 0.4 V IEXTL VEXT = 0.4 V VOUT1 VOUT2 VOUT Ta * VOUT fOSC MaxDuty VIN = VOUT(S) x 0.4 to x 0.6 IOUT = 10 A to VOUT(S) / 50 x 1.25 Ta = -40 to +85C - 50 - ppm / C 2 VOUT = VOUT(S) x 0.95 VOUT = VOUT(S) x 0.95 85 75 100 83 115 90 kHz % 1 1 PFMDuty VIN = VOUT(S) - 0.1 V, No-load 10 15 24 % 1 VSH VSL1 VSL2 Measured oscillation at EXT pin Judged oscillation stop at At VOUT1.5 V EXT pin At VOUT<1.5 V 0.75 - - - - - - 0.3 0.2 V V V 1 1 1 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Table 23 (2 / 2) Item ON / OFF pin input current (For with shutdown function) Symbol Condition (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit ISH VON / OFF = VOUT(S) x 0.95 - 0.1 - 0.1 A 1 ISL VON / OFF = 0 V - 0.1 - 0.1 A 1 6.0 85 12.0 - ms % 2 2 Soft start time tSS - 3.0 Efficiency EFFI - - External parts Coil: CDRH6D28-470 of Sumida Corporation Diode: RB461F (Schottky type) of Rohm Co., Ltd. Capacitor: F93 (16 V, 47 F tantalum type) of Nichicon Corporation Transistor: CPH3210 of Sanyo Electric Co., Ltd. 1.0 k Base resistor (Rb): Base capacitor (Cb): 2200 pF (ceramic type) VIN = VOUT(S) x 0.6 applied, IOUT = VOUT(S) / 50 With shutdown function : ON / OFF pin is connected to VOUT For VDD / VOUT separate type : VDD pin is connected to VOUT pin Remark 1. VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. 2. VDD / VOUT separate type A step-up operation is performed from VDD = 0.8 V. However, 1.8 V VDD 10 V is recommended stabilizing the output voltage and oscillation frequency. (VDD 1.8 V must be applied for products with a set value of less than 1.9 V.) Seiko Instruments Inc. 13 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (2) 250 kHz Product (H, J and L Types) Table 24 Item Symbol Condition Output voltage VOUT - Input voltage Operation start voltage Oscillation start voltage VIN VST1 VST2 Operation holding voltage VHLD Current consumption 1 ISS1 Current consumption 2 ISS2 - IOUT = 1 mA No external parts, Voltage applied to VOUT IOUT = 1 mA, Judged by decreasing VIN voltage gradually VOUT = VOUT(S) x 0.95 S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 VOUT = VOUT(S) + 0.5 V S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Current consumption during shutdown (With shutdown function) EXT pin output current Line regulation Load regulation Output voltage temperature coefficient Oscillation frequency Maximum duty ratio PWM / PFM switching duty ratio (For S-8356/58 Series) - - V 2 - - - - - - - - - - - - 28.9 42.7 58.0 74.5 92.0 110.5 8.7 8.8 9.0 9.2 9.3 9.5 48.2 71.1 96.7 124.1 153.4 184.2 17.3 17.6 18.0 18.3 18.6 19.0 A A A A A A A A A A A A 1 1 1 1 1 1 1 1 1 1 1 1 - - 0.5 A 1 - 4.5 - 6.2 - 7.8 - 10.3 - 13.3 - 16.1 - 18.9 9.5 12.6 15.5 19.2 23.8 27.4 30.3 - - - 8.9 - 12.3 - 15.7 - 20.7 - 26.7 - 32.3 - 37.7 19.0 25.2 31.0 38.5 47.6 54.8 60.6 30 30 - - - - - - - - - - - - - - 60 60 mA mA mA mA mA mA mA mA mA mA mA mA mA mA mV mV 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 - 50 - ppm / C 2 212.5 70 250 78 287.5 85 kHz % 1 1 10 15 24 % 1 VON / OFF = 0 V IEXTH VEXT = VOUT - 0.4 V IEXTL VEXT = 0.4 V VOUT1 VOUT2 VOUT Ta * VOUT fOSC MaxDuty VIN = VOUT(S) x 0.4 to x 0.6 IOUT = 10 A to VOUT(S) / 50 x 1.25 VOUT = VOUT(S) x 0.95 VOUT = VOUT(S) x 0.95 PFMDuty VIN = VOUT(S) - 0.1 V, No-load VSH VSL1 VSL2 0.75 - - - - - - 0.3 0.2 V V V 1 1 1 - 0.1 - 0.1 A 1 - 0.1 - 0.1 A 1 1.5 - 3.0 85 6.0 - ms % 2 2 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Ta = -40 to +85C ON / OFF pin input current (With shutdown function) ISH ISL VON / OFF = 0 V Soft start time Efficiency tSS EFFI 14 0.7 ISSS Measured oscillation at EXT pin Judged oscillation stop at At VOUT1.5 V EXT pin At VOUT<1.5 V VON / OFF = VOUT(S) x 0.95 ON / OFF pin input voltage (With shutdown function) (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit VOUT(S) VOUT(S) VOUT(S) V 2 x 0.976 x 1.024 - - 10 V 2 - - 0.9 V 2 - - 0.8 V 1 - - Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series External parts Coil: CDRH6D28-220 of Sumida Corporation Diode: RB461F (Schottky type) of Rohm Co., Ltd. Capacitor: F93 (16 V, 47 F tantalum type) of Nichicon Corporation Transistor: CPH3210 of Sanyo Electric Co., Ltd. 1.0 k Base resistor (Rb): 2200 pF (ceramic type) Base capacitor (Cb): VIN = VOUT(S) x 0.6 applied, IOUT = VOUT(S) / 50 With shutdown function : ON / OFF pin is connected to VOUT For VDD / VOUT separate type : VDD pin is connected to VOUT pin Remark 1. VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. 2. VDD / VOUT separate type A step-up operation is performed from VDD = 0.8 V. However, 1.8 V VDD 10 V is recommended stabilizing the output voltage and oscillation frequency. (VDD 1.8 V must be applied for products with a set value of less than 1.9 V.) Seiko Instruments Inc. 15 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (3) 300 kHz Product (F, G and M Types) Table 25 Item Symbol Condition Output voltage VOUT - Input voltage Operation start voltage Oscillation start voltage VIN VST1 VST2 Operation holding voltage VHLD Current consumption 1 ISS1 Current consumption 2 ISS2 - IOUT = 1 mA No external parts, Voltage applied to VOUT IOUT = 1 mA, Judged by decreasing VIN voltage gradually VOUT = VOUT(S) x 0.95 S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 VOUT = VOUT(S) + 0.5 V S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Current consumption during shutdown (With shutdown function) EXT pin output current Line regulation Load regulation Output voltage temperature coefficient Oscillation frequency Maximum duty ratio PWM / PFM switching duty ratio (For S-8356/58 Series) - - V 2 - - - - - - - - - - - - 33.8 50.3 68.6 88.4 109.4 131.6 9.7 9.9 10.0 10.2 10.4 10.5 56.4 83.9 114.4 147.4 182.4 219.3 19.4 19.7 20.0 20.4 20.7 21.0 A A A A A A A A A A A A 1 1 1 1 1 1 1 1 1 1 1 1 - - 0.5 A 1 - 4.5 - 6.2 - 7.8 - 10.3 - 13.3 - 16.1 - 18.9 9.5 12.6 15.5 19.2 23.8 27.4 30.3 - - - 8.9 - 12.3 - 15.7 - 20.7 - 26.7 - 32.3 - 37.7 19.0 25.2 31.0 38.5 47.6 54.8 60.6 30 30 - - - - - - - - - - - - - - 60 60 mA mA mA mA mA mA mA mA mA mA mA mA mA mA mV mV 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 - 50 - ppm / C 2 VON / OFF = 0 V IEXTH VEXT = VOUT - 0.4 V IEXTL VEXT = 0.4 V VOUT1 VOUT2 VOUT Ta * VOUT fOSC MaxDuty VIN = VOUT(S) x 0.4 to x 0.6 IOUT = 10 A to VOUT(S) / 50 x 1.25 VOUT = VOUT(S) x 0.95 VOUT = VOUT(S) x 0.95 255 70 300 78 345 85 kHz % 1 1 PFMDuty VIN = VOUT(S) - 0.1 V, No-load 10 15 24 % 1 VSH VSL1 VSL2 0.75 - - - - - - 0.3 0.2 V V V 1 1 1 - 0.1 - 0.1 A 1 - 0.1 - 0.1 A 1 1.5 - 3.0 85 6.0 - ms % 2 2 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Ta = -40 to +85C ON / OFF pin input current (With shutdown function) ISH ISL VON / OFF = 0 V Soft start time Efficiency tSS EFFI 16 0.7 ISSS Measured oscillation at EXT pin Judged oscillation stop at At VOUT1.5 V EXT pin At VOUT<1.5 V VON / OFF = VOUT(S) x 0.95 ON / OFF pin input voltage (With shutdown function) (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit VOUT(S) VOUT(S) VOUT(S) V 2 x 0.976 x 1.024 - - 10 V 2 - - 0.9 V 2 - - 0.8 V 1 - - Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series External parts Coil: CDRH6D28-220 of Sumida Corporation Diode: RB461F (Schottky type) of Rohm Co., Ltd. Capacitor: F93 (16 V, 47 F tantalum type) of Nichicon Corporation Transistor: CPH3210 of Sanyo Electric Co., Ltd. 1.0 k Base resistor (Rb): 2200 pF (ceramic type) Base capacitor (Cb): VIN = VOUT(S) x 0.6 applied, IOUT = VOUT(S) / 50 With shutdown function : ON / OFF pin is connected to VOUT For VDD / VOUT separate type : VDD pin is connected to VOUT pin Remark 1. VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. 2. VDD / VOUT separate type A step-up operation is performed from VDD = 0.8 V. However, 1.8 V VDD 10 V is recommended stabilizing the output voltage and oscillation frequency. (VDD 1.8 V must be applied for products with a set value of less than 1.9 V.) Seiko Instruments Inc. 17 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (4) 600 kHz Product (N Type) Table 26 Item Symbol Condition Output voltage VOUT - Input voltage Operation start voltage Oscillation start voltage VIN VST1 VST2 Operation holding voltage VHLD Current consumption 1 ISS1 Current consumption 2 ISS2 - IOUT = 1 mA No external parts, Voltage applied to VOUT IOUT = 1 mA, Judged by decreasing VIN voltage gradually VOUT = VOUT(S) x 0.95 S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 VOUT = VOUT(S) + 0.5 V S-835xx15 to 19 S-835xx20 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Current consumption during shutdown EXT pin output current (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit VOUT(S) VOUT(S) VOUT(S) V 2 x 0.976 x 1.024 - - 10 V 2 - - 0.9 V 2 - - 0.8 V 1 0.7 - - V 2 - - - - - - - - - - - - 63.6 96.4 132.8 172.2 214.0 240.2 15.9 16.1 16.2 16.4 16.6 16.7 105.9 160.6 221.3 286.9 356.7 400.3 31.8 32.1 32.4 32.8 33.1 33.3 A A A A A A A A A A A A 1 1 1 1 1 1 1 1 1 1 1 1 - - 0.5 A 1 - 4.5 - 6.2 - 7.8 - 10.3 - 13.3 - 16.1 - 18.9 9.5 12.6 15.5 19.2 23.8 27.4 30.3 - - - 8.9 - 12.3 - 15.7 - 20.7 - 26.7 - 32.3 - 37.7 19.0 25.2 31.0 38.5 47.6 54.8 60.6 30 30 - - - - - - - - - - - - - - 60 60 mA mA mA mA mA mA mA mA mA mA mA mA mA mA mV mV 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 - 50 - ppm / C 2 ISSS VON / OFF = 0 V IEXTH VEXT = VOUT - 0.4 V IEXTL VEXT = 0.4 V Line regulation Load regulation Output voltage temperature coefficient Oscillation frequency Maximum duty ratio PWM / PFM switching duty ratio (For S-8356/58 Series) VOUT1 VOUT2 VOUT Ta * VOUT fOSC MaxDuty VIN = VOUT(S) x 0.4 to x 0.6 IOUT = 10 A to VOUT(S) / 50 x 1.25 VOUT = VOUT(S) x 0.95 VOUT = VOUT(S) x 0.95 510 65 600 78 690 85 kHz % 1 1 PFMDuty VIN = VOUT(S) - 0.1 V, No-load 10 15 24 % 1 ON / OFF pin input voltage VSH Measured oscillation at EXT pin 0.75 - - V 1 VSL1 VSL2 Judged oscillation stop at EXT pin - - - - 0.3 0.2 V V 1 1 ISH VON / OFF = VOUT(S) x 0.95 - 0.1 - 0.1 A 1 ISL VON / OFF = 0 V - 0.1 - 0.1 A 1 1.5 - 3.0 85 6.0 - ms % 2 2 ON / OFF pin input current Soft start time Efficiency 18 tSS EFFI S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 S-835xx15 to 19 S-835xx20 to 24 S-835xx25 to 29 S-835xx30 to 39 S-835xx40 to 49 S-835xx50 to 59 S-835xx60 to 65 Ta = -40 to +85C At VOUT1.5 V At VOUT<1.5 V - - Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series External parts Coil: Diode: Capacitor: Transistor: Base resistor (Rb): Base capacitor (Cb): CDRH6D28-100 of Sumida Corporation RB461F (Schottky type) of Rohm Co., Ltd. F93 (16 V, 47 F tantalum type) of Nichicon Corporation CPH3210 of Sanyo Electric Co., Ltd. 1.0 k 2200 pF (ceramic type) VIN = VOUT(S) x 0.6 applied, IOUT = VOUT(S) / 50 , ON / OFF = VOUT Remark VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. Seiko Instruments Inc. 19 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (5) 600 kHz Product (P and Q types) Table 27 Item Symbol Condition - Output voltage VOUT Input voltage Operation start voltage Oscillation start voltage VIN VST1 VST2 Operation holding voltage VHLD Current consumption 1 Current consumption 2 Current consumption during shutdown (With shutdown function) EXT pin output current ISS1 ISS2 - IOUT = 1 mA No external parts, Voltage applied to VDD IOUT = 1 mA, Judged by decreasing VIN voltage gradually VDD = 3.3 V VDD = 3.3 V ISSS VON / OFF = 0 V IEXTH IEXTL VOUT1 VOUT2 VOUT Ta * VOUT fOSC MaxDuty VDD = 3.3 V VDD = 3.3 V VIN = VOUT(S) x 0.4 to x 0.6 IOUT = 10 A to VOUT(S) / 50 x 1.25 Line regulation Load regulation Output voltage temperature coefficient Oscillation frequency Maximum duty ratio PWM / PFM switching duty ratio (For S-8356/58 Series) ON / OFF pin input voltage (With shutdown function) ON / OFF pin input current (With shutdown function) (Ta = 25C unless otherwise specified) Measurement Min. Typ. Max. Unit circuit VOUT(S) VOUT(S) VOUT(S) V 4 x 0.976 x 1.024 - - 10 V 4 - - 0.9 V 4 - - 0.8 V 3 0.7 - - V 4 - - 132.8 16.2 221.3 32.4 A A 3 3 - - 0.5 A 3 - 10.3 19.2 - - - 20.7 38.5 30 30 - - 60 60 mA mA mV mV 3 3 4 4 - 50 - ppm / C 4 VDD = 3.3 V VDD = 3.3 V 510 65 600 78 690 85 kHz % 3 3 PFMDuty VIN = VOUT(S) - 0.1 V, No-load 10 15 24 % 3 VSH VSL1 VSL2 0.75 - - - - - - 0.3 0.2 V V V 3 3 3 ISH Measured oscillation at EXT pin Judged oscillation stop at At VOUT1.5 V EXT pin At VOUT<1.5 V VON / OFF = VOUT(S) x 0.95 - 0.1 - 0.1 A 3 ISL VON / OFF = 0 V - 0.1 - 0.1 A 3 1.5 - 3.0 85 6.0 - ms % 4 4 Soft start time tSS Efficiency EFFI External parts Coil: Diode: Capacitor: Transistor: Base resistor (Rb): Base capacitor (Cb): Ta = -40 to +85C - - CDRH6D28-100 of Sumida Corporation RB461F (Schottky type) of Rohm Co., Ltd. F93 (16 V, 47 F tantalum type) of Nichicon Corporation CPH3210 of Sanyo Electric Co., Ltd. 1.0 k 2200 pF (ceramic type) VIN = VOUT(S) x 0.6 applied, IOUT = VOUT(S) / 50 , ON / OFF = VOUT Remark 1. VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. 2. VDD / VOUT separate type A step-up operation is performed from VDD = 0.8 V. However, 1.8 V VDD 10 V is recommended stabilizing the output voltage and oscillation frequency. (VDD 1.8 V must be applied for products with a set value of less than 1.9 V.) 20 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Measurement Circuits Oscilloscope 1. EXT ON / OFF VOUT *1 VSS VDD A *2 + - 0.1 F Figure 10 2. CD Rb + - EXT ON / OFF VSS + - VOUT VDD*2 V *1 0.1 F Figure 11 Oscilloscope 3. EXT ON / OFF VOUT *1 VSS VDD + - A 0.1 F Figure 12 4. CD Rb + - EXT VSS + - VOUT VDD ON / OFF V *1 0.1 F Figure 13 *1. With shutdown function *2. For VDD / VOUT separate type Seiko Instruments Inc. 21 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Operation 1. Switching Control Types 1.1 PWM Control (S-8355/57 Series) The S-8355/57 Series is a DC-DC converter using a pulse width modulation method (PWM) and features a low current consumption. In conventional PFM DC-DC converters, pulses are skipped when the output load current is low, causing a fluctuation in the ripple frequency of the output voltage, resulting in an increase in the ripple voltage. The switching frequency does not change, although the pulse width changes from 0 to 83% (78% for F, G, H, J, L, M, N, P and Q types) corresponding to each load current. The ripple voltage generated from switching can thus be removed easily through a filter because the switching frequency is constant. 1.2 PWM/PFM Switching Control (S-8356/58 Series) S-8356/58 Series is a DC-DC converter that automatically switches between a pulse width modulation method (PWM) and a pulse frequency modulation method (PFM), depending on the load current, and features low current consumption. The S-8356/58 Series operates under PWM control with the pulse width duty changing from 15 to 83% (78% for F, G, H, J, L, M, N, P and Q types) in a high output load current area. The S-8356/58 Series operates under PFM control with the pulse width duty fixed at 15%, and pulses are skipped according to the load current. The oscillation circuit thus oscillates intermittently so that the resultant lower self current consumption prevents a reduction in the efficiency at a low load current. The switching point from PWM control to PFM control depends on the external devices (coil, diode, etc.), input voltage and output voltage. This series are an especially highly efficient DC-DC converter at an output current around 100 A. 2. Soft Start Function For this IC, the built-in soft start circuit controls the rush current and overshoot of the output voltage when powering on or when the ON / OFF pin is switched to the "H" level. 22 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. ON/OFF Pin (Shutdown Pin) (SOT-23-5 Package Products of S-8355/56/57/58 Series B, H, F, K, L, M, N and Q Types, and 6-Pin SNB(B) Package Products) ON / OFF pin stops or starts step-up operation. Setting the ON / OFF pin to the "L" level stops operation of all the internal circuits and reduces the current consumption significantly. DO NOT use the ON / OFF pin in a floating state because it has the structure shown in Figure 14 and is not pulled up or pulled down internally. DO NOT apply a voltage of between 0.3 V and 0.75 V to the ON / OFF pin because applying such a voltage increases the current consumption. If the ON / OFF pin is not used, connect it to the VOUT pin. The ON / OFF pin does not have hysteresis. Table 28 ON / OFF pin CR oscillation circuit Output voltage "H" Operation Fixed VIN*1 "L" Stop *1. Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode forward voltage from VIN. VOUT *1 ON / OFF VSS *1. VDD for K, L, M and Q types. Figure 14 ON/OFF Pin Structure Seiko Instruments Inc. 23 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4. Operation The following are the basic equations [(1) through (7)] of the step-up switching regulator. (Refer to Figure 15.) L CONT D VIN VOUT M1 + EXT VSS - CL Figure 15 Step-Up Switching Regulator Circuit for Basic Equation Voltage at CONT pin at the moment M1 is turned ON (VA) *1 : VA = VS *2 (1) *1. Current flowing through L (IL) is zero. *2. Non-saturated voltage of M1. The change in IL over time : dIL VL VIN - VS = = dt L L (2) Integration of equation (2) (IL) : V - VS IL = IN *t L (3) IL flows while M1 is ON (tON). The time of tON is determined by the oscillation frequency of OSC. The peak current (IPK) after tON : V - VS IPK = IN * t ON L (4) The energy stored in L is represented by 1/2 * L (IPK)2. When M1 is turned OFF (tOFF), the energy stored in L is emitted through a diode to the output capacitor. Then, the reverse voltage (VL) is generated : VL = (VOUT + VD*1) - VIN (5) *1. Diode forward voltage The voltage at CONT pin rises only by VOUT+VD. The change in the current (IL) flowing through the diode into VOUT during tOFF : dIL VL VOUT + VD - VIN = = dt L L 24 Seiko Instruments Inc. (6) STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Integration of the equation (6) is as follows : + VD - VIN V IL = IPK - OUT *t L (7) During tON, the energy is stored in L and is not transmitted to VOUT. When receiving the output current (IOUT) from VOUT, the energy of the capacitor (CL) is consumed. As a result, the pin voltage of CL is reduced, and goes to the lowest level after M1 is turned ON (tON). When M1 is turned OFF, the energy stored in L is transmitted through the diode to CL, and the voltage of CL rises rapidly. VOUT is a time function, and therefore indicates the maximum value (ripple voltage (VP-P) ) when the current flowing through into VOUT and load current (IOUT) match. Next, the ripple voltage is determined as follows. IOUT vs. t1 (time) from when M1 is turned OFF (after tON) to when VOUT reaches the maximum level : + VD - VIN V IOUT = IPK - OUT (8) * t1 L L t1 = (IPK - IOUT ) * VOUT + VD - VIN (9) When M1 is turned OFF (tOFF), IL = 0 (when the energy of the inductor is completely transmitted). Based on equation (7) : t OFF L = (10) V OUT + VD - VIN IPK When substituting equation (10) for equation (9) : I t1 = t OFF - OUT * t OFF IPK (11) Electric charge Q1 which is charged in CL during t1 : t1 t1 t1 V + VD - VIN V + VD - VIN 1 2 Q1 = IL dt = IPK * dt - OUT * tdt = IPK * t1 - OUT * t1 0 0 0 L L 2 When substituting equation (12) for equation (9) : 1 I +I Q1 = IPK - (IPK - IOUT ) * t1 = PK OUT * t1 2 2 A rise in voltage (VP-P) due to Q 1 : Q1 1 IPK + IOUT = * VP -P = * t1 CL CL 2 (12) (13) (14) When taking into consideration IOUT to be consumed during t1 and the Equivalent Series Resistance (RESR) of CL : Q1 1 IPK + IOUT I *t I +I = * (15) VP -P = * t1 + PK OUT * RESR - OUT 1 CL CL 2 2 CL When substituting equation (11) for equation (15) : (I - I )2 t I +I VP -P = PK OUT * OFF + PK OUT * RESR 2IPK CL 2 (16) Therefore to reduce the ripple voltage, it is important that the capacitor connected to the output pin has a large capacity and a small RESR. Seiko Instruments Inc. 25 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series External Parts Selection The relationship between the major characteristics of the step-up circuit and the characteristics parameters of the external parts are shown in Figure 16. For higher efficiency ? For larger output current ? Operation efficiency Stand-by efficiency For smaller ripple voltage ? Larger inductance Smaller inductance Smaller direct current resistance of inductor Larger output capacitance Larger output capacitance With MOS FET, With MOS FET, smaller ON resistance smaller input capacitance With bipolar transistor, With bipolar transistor, larger smaller external resistance Rb external resistance Rb Figure 16 Relationship between Major Characteristics of Step-up Circuit and External Parts 26 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 1. Inductor The inductance value (L value) has a strong influence on the maximum output current (IOUT) and efficiency (). Figure 17 shows the relationship between the IOUT and dependency on L of S-8355/56/57/58. F, G, H, J, L and M types CDRH6D28, VOUT = 5.0 V, VIN = 3.0 V IOUT Efficiency Efficiency decreases decreases IOUT decreases IOUT decreases IPK decreases IPK increases Coil size : Coil size : bigger smaller Recommended range 4.7 L value (H) 47 Figure 17 L Value vs. IOUT Characteristics, L Value vs. Characteristics The peak current (IPK) increases by decreasing L value and the stability of the circuit improves and IOUT increases. If L value is decreased, the efficiency falls causing a decline in the current drive capacity for the switching transistor, and IOUT decreases. The loss of IPK by the switching transistor decreases by increasing L value and the efficiency becomes maximum at a certain L value. Further increasing L value decreases the efficiency due to the loss of the direct current resistance of the coil. IOUT also decreases. A higher oscillation frequency allows selection of a lower L value, making the coil smaller. The recommended inductances are a 22 to 100 H for B, E, and K types, a 4.7 to 47 H for F, G, H, J, L, and M types, 3.0 to 22 H for N, P and Q types. Be careful of the allowable inductor current when choosing an inductor. Exceeding the allowable current of the inductor causes magnetic saturation, much lower efficiency and destruction of the IC chip due to a large current. Choose an inductor so that IPK does not exceed the allowable current. IPK in discontinuous mode is calculated by the following equation: IPK = 2 IOUT ( VOUT + VD - VIN ) (A) fOSC * L (17) fosc = oscillation frequency, VD 0.4 V. 2. Diode Use an external diode that meets the following requirements : * Low forward voltage : VF < 0.3 V * High switching speed : 500 ns max. * Reverse voltage : VOUT + VF or more * Current rate : IPK or more Seiko Instruments Inc. 27 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. Capacitor (CIN, CL) A capacitor on the input side (CIN) improves the efficiency by reducing the power impedance and stabilizing the input current. Select a CIN value according to the impedance of the power supply used. A capacitor on the output side (CL) is used for smoothing the output voltage. For step-up types, the output voltage flows intermittently to the load current, so step-up types need a larger capacitance than step-down types. Therefore, select an appropriate capacitor in accordance with the ripple voltage, which increases in case of a higher output voltage or a higher load current. The capacitor value should be 10 F or more. Select an appropriate capacitor the equivalent series resistance (RESR) for stable output voltage. The stable voltage range in this IC depends on the RESR. Although the inductance value (L value) is also a factor, an RESR of 30 to 500 m maximizes the characteristics. However, the best RESR value may depend on the L value, the capacitance, the wiring, and the applications (output load). Therefore, fully evaluate the RESR under the actual operating conditions to determine the best value. Refer to the "3. Example of Ceramic Capacitor Application" (Figure 27) in the " Application Circuit" for the circuit example using a ceramic capacitor and the external resistance of the capacitor (RESR). 4. External Transistor An enhancement (N-channel) MOS FET type or A bipolar (NPN) type can be used as the external transistor. 4.1 Enhancement (N-channel) MOS FET Type Figure 18 is a circuit example using a MOS FET transistor (N-channel). VOUT + - VSS EXT VDD*1 + ON / OFF *2 - VOUT *1. For VDD / VOUT separate type. *2. With shutdown function. Figure 18 Circuit Example Using MOS FET (N-channel) Type An N-channel power MOS FET should be used for the MOS FET. Because the gate voltage and current of the external power MOS FET are supplied from the stepped-up output voltage (VOUT), the MOS FET is driven more effectively. A large current may flow during startup, depending on the MOS FET selection. So perform sufficient evaluation using the actual devices. Also recommend to use a MOS FET with an input capacitance of 700 pF or less. Since the ON-resistance of the MOS FET might depend on the difference between the output voltage (VOUT) and the threshold voltage of the MOS FET, and affect the output current as well as the efficiency, the threshold voltage should be low. When the output voltage is low, the circuit operates only when the MOS FET has a threshold voltage lower than the output voltage. 28 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4.2 Bipolar (NPN) Type A circuit example using the CPH3210 (hFE = 200 to 560) from Sanyo Electric Co., Ltd. As a bipolar transistor (NPN) is shown in Figure 20 to 25 in the " Standard Circuits". The hFE value and Rb value of the bipolar transistor determine the driving capacity to increase the output current using a bipolar transistor. A peripheral circuit example of the transistor is shown in Figure 19. VOUT *1 Cb 2200 pF Pch EXT Nch IPK Rb 1 k *1. VDD for E, G, J, K, L, M, P and Q types. Figure 19 External Transistor Peripheral Circuit The recommended Rb value is around 1 k. Actually, calculate the necessary base current (Ib) from the bipolar I V - 0 .7 0 .4 *1 transistor (hFE) using Ib = PK , and select the smaller Rb value than Rb = OUT . - hFE Ib IEXTH A small Rb value can increase the output current, but the efficiency decreases. Since a current may flow on the pulse and the voltage may drop due to wiring resistance or other factors in the actual circuit, therefore the optimum Rb value should be determined by experiment. Connecting the speed-up capacitor (Cb) in parallel with the Rb resistance as shown in Figure 19, decreases switching loss and improves the efficiency. 1 . The Cb value is calculated according to Cb 2 * Rb * fosc * 0.7 Select a Cb value after performing sufficient evaluation since the optimum Cb value differs depending upon the characteristics of the bipolar transistor. *1. For E, G, J, K, L, M, P and Q type, Rb = VDD - 0.7 0 .4 - . Ib IEXTH Seiko Instruments Inc. 29 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 5. VDD / VOUT Separate Type (For E, G, J, K, L, M, P and Q Types) The E, G, J, K, L, M, P and Q types provides separate internal circuit power supply (VDD pin) and output voltage setting pin (VOUT pin) in the IC, making it ideal for the following applications. (1) When changing the output voltage with external resistance. (2) When outputting a high voltage such as +15 V or +20 V. Choose the products in the Table 29 according to the applications (1) or (2) above. Table 29 Output Voltage (VCC) S-835xx18 S-835xx50 Connection to VDD pin 1.8 V VCC < 5 V Yes - VIN or VCC 5 V VCC Yes Yes VIN Reference Circuit Application circuit 1 (Figure 26) Application circuit 1 (Figure 26) - Cautions 1. This IC starts a step-up operation at VDD = 0.8 V, but set 1.8 VDD 10 V to stabilize the output voltage and frequency of the oscillator. (Input a voltage of 1.8 V or more at the VDD pin for all products with a setting less than 1.9 V.) An input voltage of 1.8 V or more at the VDD pin allows connection of the VDD pin to either the input voltage VIN pin or output VOUT pin. 2. Choose external resistors RA and RB so as to not affect the output voltage, considering that there is impedance between the VOUT pin and VSS pin in the IC chip. The internal resistance between the VOUT pin and VSS pin is as follows : (1) S-835xx18 : 2.1 to 14.8 M (2) S-835xx20 : 1.4 to 14.8 M (3) S-835xx30 : 1.4 to 14.2 M (4) S-835xx50 : 1.4 to 12.1 M 3. Attach a capacitor (CC) in parallel to the RA resistance when an unstable event such as oscillation of the output voltage occurs. Calculate CC using the following equation : 1 CC [ F ] = 2 * * R A * 20 kHz 30 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Standard Circuits 1 S-8357BxxMA, S-8357BxxUA, S-8358BxxMA, S-8358BxxUA SD VIN EXT 1 K IC internal power supply Oscillation circuit 2200 pF + - CIN VOUT PWM control circuit or PWM / PFM switching control circuit Phase compensating circuit Soft start built-in reference power supply + - CL + - VSS Remark The power supply for the IC chip is from the VOUT pin. Figure 20 2 S-8357BxxMC, S-8357FxxMC / BD, S-8357HxxMC / BD, S-8357NxxMC / BD, S-8358BxxMC, S-8358FxxMC / BD, S-8358HxxMC / BD, S-8358NxxMC / BD SD L Oscillation circuit 2200 pF VIN + - CIN VOUT IC internal power supply EXT PWM control circuit or PWM / PFM switching control circuit 1 K Soft start built-in reference power supply Phase compensating circuit + - CL + - VSS ON / OFF Remark The power supply for the IC chip is from the VOUT pin. Figure 21 3 S-8357ExxMC, S-8357GxxMC / BD, S-8357JxxMC / BD, S-8357PxxMC / BD, S-8358ExxMC, S-8358GxxMC / BD, S-8358JxxMC / BD, S-8358PxxMC / BD SD L 2200 pF VIN + - CIN EXT 1 K VDD Oscillation circuit PWM control circuit or PWM / PFM switching control circuit Soft start built-in reference power supply IC internal power supply + - Phase compensating circuit CC VOUT RA RB + - CL VSS Remark The power supply for the IC chip is from the VOUT pin. Figure 22 Seiko Instruments Inc. 31 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4 S-8357ExxMC, S-8357GxxMC / BD, S-8357JxxMC / BD, S-8358ExxMC, S-8358GxxMC / BD, S-8358JxxMC / BD SD L VIN EXT + - CIN 1 K IC internal power supply + - Oscillation circuit 2200 pF VOUT VDD PWM control circuit or PWM / PFM switching control circuit Soft start built-in reference power supply + - CL Phase compensating circuit VSS Remark The power supply for the IC chip is from the VOUT pin. Figure 23 5 S-8355KxxMC / BD, S-8355LxxMC / BD, S-8355MxxMC / BD, S-8355QxxMC / BD, S-8356KxxMC / BD, S-8356LxxMC / BD, S-8356MxxMC / BD, S-8356QxxMC / BD SD VDD L VIN EXT + - CIN IC internal power supply + - Oscillation circuit 2200 pF 1 K PWM control circuit or PWM / PFM switching control circuit Soft start built-in reference power supply Phase compensating circuit CC RA VOUT RB + - CL VSS ON / OFF Remark The power supply for the IC chip is from the VOUT pin. Figure 24 6 S-8355KxxMC / BD, S-8355LxxMC / BD, S-8355MxxMC / BD, S-8356KxxMC / BD, S-8356LxxMC / BD, S-8356MxxMC / BD L SD 2200 pF VIN + - CIN EXT 1 K VDD Oscillation circuit VOUT IC internal power supply PWM control circuit or PWM / PFM switching control circuit Soft start built-in reference power supply Phase compensating circuit + - CL + - VSS ON / OFF Remark The power supply for the IC chip is from the VOUT pin. Figure 25 Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. 32 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Precautions * Mount external capacitors, the diode, and the coil as close as possible to the IC. * Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current flows at the time of a power supply injection. Because these largely depend on the coil, the capacitor and impedance of power supply used, fully check them using an actually mounted model. * Make sure that the dissipation of the switching transistor (especially at a high temperature) does not exceed the allowable power dissipation of the package. * The performance of this IC varies depending on the design of the PCB patterns, peripheral circuits and external parts. Thoroughly test all settings with your device. Also, try to use the recommended external parts. If not, contact an SII sales person. * Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. * SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party. Seiko Instruments Inc. 33 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Application Circuits 1. LCD Power Supply The following example is an application power supply circuit (15 V / 20 V output) to drive an LCD panel, and its characteristics. VOUT L SD + VIN CIN + RA - CC VDD VOUT ON / OFF S-8356M50, S-8356Q50 EXT TR CL - RB VSS Figure 26 Power Supply Circuit Example for LCD Table 30 Condition Output Voltage IC L Type Name TR Type Name SD Type Name 1 15 V S-8356M50 CDRH5D18-220 MCH3405 MA2Z748 2 20 V S-8356M50 CDRH5D18-220 FDN337N MA729 3 10 V S-8356Q50 CDRH5D18-100 MCH3405 MA2Z748 CL Ra F93 580 k (20 V, 10 F) F93 575 k (25 V, 10 F) F93 560 k (20 V, 10 F) Rb Cc 300 k 15 pF 200 k 15 pF 560 k 15 pF Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. 34 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 2. Output Characteristics of The Power Supply for LCD The data of the step-up characteristics (a) Output current (IOUT) vs. Efficiency () characteristics, (b) Output current (IOUT) vs. Output voltage (VOUT) characteristics under conditions of 1 to 3 in Table 30 is shown below. (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 16 80 15 60 40 VIN = 3.0 V VIN = 5.0 V VIN = 7.0 V 20 0 0.01 0.1 1 IOUT [mA] 10 VOUT [V] [%] Condition 1 14 13 12 0.01 100 VIN = 3.0 V VIN = 5.0 V VIN = 7.0 V 0.1 1 IOUT [mA] 10 100 Condition 2 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 22 20 60 40 VIN = 3.0 V VIN = 5.0 V VIN = 7.0 V 20 0 0.01 0.1 1 IOUT [mA] 10 VOUT [V] [%] 80 18 16 14 0.01 100 VIN = 3.0 V VIN = 5.0 V VIN = 7.0 V 0.1 1 IOUT [mA] 10 100 Condition 3 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 11 10 60 VOUT [V] [%] 80 40 VIN = 3.3 V VIN = 5.0 V 20 0 0.01 0.1 1 IOUT [mA] 10 100 Seiko Instruments Inc. 9 8 7 0.01 VIN = 3.3 V VIN = 5.0 V 0.1 1 IOUT [mA] 10 100 35 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. Using Ceramic Capacitor Example When using small RESR parts such as ceramic capacitors for the output capacitance, mount a resistor (R1) corresponding to the RESR in series with the ceramic capacitor (CL) as shown in Figure 27. R1 differs depending on "L" value, the capacitance, the wiring, and the application (output load). The following example shows a circuit using R1 = 100 m, output voltage = 3.3 V, output load = 500 mA and its characteristics. VOUT SD L VIN CIN EXT TR R1 VOUT VSS CL Figure 27 Using Ceramic Capacitor Circuit Example Table 31 Condition IC L Type Name TR Type Name SD Type Name SD Type Name R1 1 2 3 S-8357F33 S-8358B50 S-8357N33 CDRH6D28-220 CDRH6D28-470 CDRH6D28-100 FDN335N FDN335N FDN335N M1FH3 M1FH3 M1FH3 10 F x 2 10 F x 2 10 F x 2 100 m 100 m 100 m Caution The above connection diagram and constant will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. 36 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4. Output Characteristics of The Using Ceramic Capacitor Circuit Example The data of the step-up characteristics (a) Output current (IOUT) vs. Efficiency () characteristics, (b) Output current (IOUT) vs. Output voltage (VOUT) characteristics, (c) Output Current (IOUT) vs. Ripple voltage (Vr) under conditions of 1 to 3 in Table 31 is shown below. Condition 1 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.32 3.31 60 40 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 20 0 0.01 0.1 1 10 IOUT [mA] 100 VOUT [V] [%] 80 3.30 3.29 3.28 0.01 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 0.1 1 10 IOUT [mA] 100 1000 (c) Output Current (IOUT) vs. Ripple voltage (Vr) 100 Vr [mV] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0 0.01 0.1 1 10 IOUT [mA] 100 1000 Condition 2 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.07 5.06 60 40 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 20 Vr [mV] 0 0.01 0.1 1 10 IOUT [mA] 100 1000 VOUT [V] [%] 80 5.05 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 5.04 5.03 0.01 0.1 1 10 IOUT [mA] 100 1000 (c) Output Current (IOUT) vs. Ripple voltage (Vr) 100 VIN = 2.0 V VIN = 3.0 V 80 VIN = 4.0 V 60 40 20 0 0.01 0.1 1 10 IOUT [mA] 100 1000 Seiko Instruments Inc. 37 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Condition 3 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 3.32 100 3.31 60 40 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 20 Vr [mV] 0 0.01 0.1 1 10 IOUT [mA] 100 1000 VOUT [V] [%] 80 3.30 3.29 3.28 0.01 (c) Output Current (IOUT) vs. Ripple voltage (Vr) 100 VIN = 0.9 V VIN = 1.8 V 80 VIN = 2.7 V 60 40 20 0 0.01 38 0.1 1 10 IOUT [mA] 100 1000 Seiko Instruments Inc. VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 0.1 1 10 IOUT [mA] 100 1000 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Characteristics (Typical Data) 1. Example of Major Temperature characteristics (Ta = -40 to +85 C) (1) Current Consumption 1 (ISS1) vs. Temperature (Ta) (VOUT = 3.3 V) fOSC = 100 kHz 50 fOSC = 300 kHz 50 40 ISS1 [A] ISS1 [A] 40 30 20 20 10 10 0 -40 -20 30 0 100 0 -40 -20 20 40 60 80 100 Ta [C] 0 20 40 Ta [C] 60 80 100 fOSC = 600 kHz ISS1 [A] 80 60 40 20 0 -40 -20 0 20 40 Ta [C] 60 80 100 (2) Current Consumption 2 (ISS2) vs. Temperature (Ta) (VOUT = 3.3 V) 10 fOSC = 100 kHz 10 8 ISS2 [A] ISS2 [A] 8 6 4 2 0 -40 -20 0 10 fOSC = 300 kHz 6 4 2 20 40 Ta [C] 60 80 100 0 -40 -20 0 20 40 Ta [C] 60 80 100 fOSC = 600 kHz ISS2 [A] 8 6 4 2 0 -40 -20 0 20 40 Ta [C] 60 80 100 Seiko Instruments Inc. 39 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (3) Current Consumption at Shutdown (ISSS) vs. Temperature (Ta) fOSC = 100 kHz 1.0 fOSC = 300 kHz 1.0 0.8 ISSS [A] ISSS [A] 0.8 0.6 0.4 0.2 0.6 0.4 0.2 0 -40 -20 0 20 40 60 0 -40 -20 80 100 0 Ta [C] (4) EXT Pin Output Current "H" (IEXTH) vs. Temperature (Ta) VOUT = 3.3 V, fOSC = 100 kHz 60 -50 50 -40 40 -30 -20 VOUT = 3.3 V, fOSC = 300 kHz 30 20 10 -10 0 -40 -20 60 80 100 (5) EXT Pin Output Current "L" (IEXTL) vs. Temperature (Ta) IEXTL [mA] IEXTH [mA] -60 20 40 Ta [C] 0 20 40 Ta [C] 60 0 -40 -20 0 80 100 20 40 Ta [C] 60 80 100 (6) Oscillation Frequency (fOSC) vs. Temperature (Ta) (VOUT = 3.3 V) 400 125 350 fOSC [kHz] fOSC [kHz] fOSC = 100 kHz 150 100 75 50 -40 -20 0 fOSC [kHz] 800 60 80 100 fOSC = 600 kHz 700 600 500 400 -40 -20 0 40 20 40 Ta [C] 20 40 Ta [C] 60 80 100 Seiko Instruments Inc. fOSC = 300 kHz 300 250 200 -40 -20 0 20 40 60 80 100 Ta [C] STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (7) Maximum Duty Ratio (MaxDuty) vs. Temperature (Ta) (VOUT = 3.3 V) fOSC = 100 kHz 85 80 75 70 -40 -20 0 75 70 -40 -20 60 80 100 0 20 40 Ta [C] 60 80 100 80 75 20 40 Ta [C] 60 80 100 (8) PWM / PFM Switching Duty Ratio (PFMDuty) vs. Temperature (Ta) (S-8356/58 Series) 25 (9) ON / OFF Pin Input Voltage "H" (VSH) vs. Temperature (Ta) VOUT = 3.3 V, fOSC = 100 kHz 1.0 15 10 5 0.6 0.4 0.2 -40 -20 0 20 40 Ta [C] 60 0 -40 -20 80 100 (10) ON / OFF Pin Input Voltage "L" 1 (VSL1) vs. Temperature (Ta) 1.0 VOUT = 3.3 V, fOSC = 300 kHz 0.8 20 VSH [V] PFMDuty [%] 80 85 70 -40 -20 0 VOUT = 3.3 V, fOSC = 300 kHz 20 40 Ta [C] 60 80 100 VOUT = 1.4 V, fOSC = 300 kHz 1.0 VSL2 [V] 0.8 0.6 0.4 0.2 0 -40 -20 0 (11) ON / OFF Pin Input Voltage "L" 2 (VSL2) vs. Temperatuer (Ta) 0.8 VSL1 [V] 85 fOSC = 600 kHz 90 MaxDuty [%] 20 40 Ta [C] fOSC = 300 kHz 90 MaxDuty [%] MaxDuty [%] 90 0.6 0.4 0.2 0 20 40 Ta [C] 60 80 100 Seiko Instruments Inc. 0 -40 -20 0 20 40 Ta [C] 60 80 100 41 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (12) Soft Start Time (tSS) vs. Temperature (Ta) (VOUT = 3.3 V) fOSC = 300 kHz 8 8 6 6 tSS [ms] tSS [ms] fOSC = 100 kHz 4 4 2 2 0 -40 -20 0 20 40 Ta [C] 60 0 -40 -20 80 100 0 20 40 60 Ta [C] 80 100 fOSC = 600 kHz 8 tSS [ms] 6 4 2 0 -40 -20 0 20 40 Ta [C] 60 80 100 (13) Operation Start Voltage (VST1) vs. Temperature (Ta) VOUT = 3.3 V, fOSC = 100 kHz VOUT = 3.3 V, fOSC = 100 kHz 1.2 1.0 1.0 0.8 0.8 VST2 [V] VST1 [V] 1.2 (14) Oscillation Start Voltage (VST2) vs. Temperature (Ta) 0.6 0.4 0.2 0 -40 -20 0 42 0.6 0.4 0.2 20 40 Ta [C] 60 80 100 Seiko Instruments Inc. 0 -40 -20 0 20 40 Ta [C] 60 80 100 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (15) Output Voltage (VOUT) vs. Temperature (Ta) (VOUT = 3.3 V) fOSC = 100 kHz 3.40 3.35 VOUT [V] VOUT [V] 3.35 3.30 3.30 3.25 3.25 3.20 -40 -20 fOSC = 300 kHz 3.40 0 20 40 Ta [C] 60 80 100 3.20 -40 -20 0 20 40 Ta [C] 60 80 100 fOSC = 600 kHz 3.40 VOUT [V] 3.35 3.30 3.25 3.20 -40 -20 0 20 40 Ta [C] 60 80 100 Seiko Instruments Inc. 43 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 2. Examples of Major Power Supply Dependence Characteristics (Ta = 25 C) (1) Current Consumption 1 (ISS1) vs. Power Supply Voltage (VDD), Current Consumption 2 (ISS2) vs. Power Supply Voltage (VDD) (VOUT = 3.3 V) fOSC = 300 kHz 50 fOSC = 600 kHz 100 ISS1,2 [A] ISS1,2 [A] 40 30 20 10 0 0 80 60 40 20 2 4 6 VDD [V] 8 0 10 0 2 4 6 VDD [V] 8 10 (2) Current Consumption at Shutdown (ISSS) vs. Power Supply Voltage (VDD) VOUT = 3.3 V, fOSC = 300 kHz 1.0 ISSS [A] 0.8 0.6 0.4 0.2 0 0 2 4 6 VDD [V] 8 10 (3) Oscillation Friquency (fOSC) vs. Power Supply Voltage (VDD) fOSC = 100 kHz 120 300 fOSC [kHz] fOSC [kHz] 100 80 60 40 20 0 2 4 6 VDD [V] 8 10 fOSC = 600 kHz 720 fOSC [kHz] 600 480 360 240 120 0 44 fOSC = 300 kHz 360 2 4 6 VDD [V] 8 10 Seiko Instruments Inc. 240 180 120 60 0 2 4 6 VDD [V] 8 10 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (4) Maximum Duty Ratio (MaxDuty) vs. Power Supply Voltage (VDD) 100 90 90 MaxDuty [%] MaxDuty [%] fOSC = 100 kHz 100 80 70 60 50 0 2 8 70 60 50 10 0 2 4 6 VDD [V] 8 10 90 80 70 60 50 0 2 4 6 VDD [V] 8 10 (5) EXT Pin Output Current "H" (IEXTH) vs. Power Supply Voltage (VDD) -100 (6) EXT Pin Output Current "L" (IEXTL) vs. Power Supply Voltage (VDD) -100 -80 IEXTL [mA] IEXTH [mA] 80 fOSC = 600 kHz 100 MaxDuty [%] 4 6 VDD [V] fOSC = 300 kHz -60 -40 -20 0 0 2 4 6 VDD [V] 8 10 Seiko Instruments Inc. -80 -60 -40 -20 0 0 2 4 6 VDD [V] 8 10 45 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (7) Output Voltage (VOUT) vs. Power Supply Voltage (VDD) (VDD Separate Type, VOUT = 3.3 V, VIN = 1.98 V, IOUT = 66 mA) fOSC = 100 kHz 3.0 2.5 2.0 1.5 0 2 VOUT [V] 8 10 fOSC = 600 kHz 3.5 3.0 2.5 2.0 1.5 46 4 6 VDD [V] 0 2 4 6 VDD [V] 8 fOSC = 300 kHz 3.5 VOUT [V] VOUT [V] 3.5 10 Seiko Instruments Inc. 3.0 2.5 2.0 1.5 0 2 4 6 VDD [V] 8 10 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. Output Waveforms (1) S-8358B33MC IOUT = 1 mA 3.35 Output voltage [0.05 V / div] IOUT = 20 mA 3.40 3.30 3.25 4 CONT voltage [2.0 V / div] 2 0 -25 -15 -5 0 5 10 15 20 25 -20 -10 time [s] 3.35 Output voltage [0.05 V / div] 3.30 3.25 4 CONT voltage 2 [2.0 V / div] 0 -25 -15 -5 0 5 10 15 20 25 -20 -10 time [s] IOUT = 100 mA IOUT = 200 mA 3.40 3.40 3.35 Output voltage [0.05 V / div] 3.40 Output voltage [0.05 V / div] 3.35 3.30 3.30 3.25 4 CONT voltage [2.0 V / div] 2 0 -25 -15 -5 0 5 10 15 20 25 -20 -10 time [s] 4 CONT voltage [2.0 V / div] 2 3.25 0 -25 -15 -5 0 5 10 15 20 25 -20 -10 time [s] (2) S-8358F33MC IOUT = 1 mA IOUT = 10 mA 3.40 Output voltage [0.05 V / div] 3.35 4 CONT voltage [2.0 V / div] 2 0 -10 3.25 3.30 -8 -6 -4 -2 0 2 4 6 8 10 Output voltage [0.05 V / div] 3.35 4 CONT voltage [2.0 V / div] 2 0 -10 3.25 time [s] 3.30 -8 -6 -4 -2 0 2 4 6 8 10 time [s] IOUT = 100 mA IOUT = 200 mA 3.40 3.40 Output voltage [0.05 V / div] 3.35 4 CONT voltage [2.0 V / div] 2 0 -10 3.25 3.30 -8 -6 -4 3.40 -2 0 2 4 6 8 10 Output voltage [0.05 V / div] 3.35 4 CONT voltage [2.0 V / div] 2 0 -10 3.25 time [s] Seiko Instruments Inc. 3.30 -8 -6 -4 -2 0 2 4 6 8 10 time [s] 47 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (3) S-8358N33MC IOUT = 1 mA IOUT = 10 mA 3.40 3.35 3.35 Output voltage [0.05 V / div] 3.30 4 CONT voltage [2.0 V / div] 2 0 -5 3.25 -4 -3 -2 -1 0 1 2 3 4 5 Output voltage [0.05 V / div] 3.30 4 CONT voltage [2.0 V / div] 2 0 -5 3.25 time [s] -4 -3 -2 IOUT = 100 mA -1 0 1 2 3 4 5 time [s] IOUT = 200 mA 3.40 3.35 Output voltage [0.05 V / div] 3.30 3.25 4 CONT voltage [2.0 V / div] 2 0 -5 48 -4 -3 -2 -1 0 1 2 3 4 5 3.40 3.40 Output voltage [0.05 V / div] 4 CONT voltage [2.0 V / div] 2 0 -5 time [s] Seiko Instruments Inc. 3.35 3.30 3.25 -4 -3 -2 -1 0 1 2 3 4 5 time [s] STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 4. Examples of Transient Response Characteristics (1) Power-On (VIN : 0 V2 V) 0 2 1 2 3 4 5 6 7 time [ms] VIN -1 0 8 9 300 kHz, IOUT = 1 mA 4 VIN [V] 2 3 4 5 6 7 time [ms] VIN -1 0 8 9 4 3 4 5 6 7 time [ms] VIN [V] VOUT [V] VIN [V] 8 9 8 9 4 2 0 2 0 VIN 1 2 3 4 5 6 7 time [ms] VOUT 2 2 -1 0 1 2 600 kHz, IOUT = 100 mA 0 0 2 2 600 kHz, IOUT = 1 mA VOUT 4 0 0 VIN 1 2 8 9 VOUT VOUT [V] VIN [V] 2 0 -1 0 3 4 5 6 7 time [ms] 300 kHz, IOUT = 100 mA VOUT 0 1 2 VOUT [V] -1 0 0 2 0 VIN 2 VIN -1 0 Seiko Instruments Inc. VOUT [V] 0 4 VOUT [V] 2 VOUT VIN [V] VIN [V] VOUT 100 kHz, IOUT = 100 mA 4 VOUT [V] 100 kHz, IOUT = 1 mA 1 2 3 4 5 6 7 time [ms] 8 9 49 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (2) ON/ OFF Pin Response ( VON / OFF : 0 V 2.0 V) 100 kHz, IOUT = 1 mA VON/OFF 0 VON/OFF -1 0 1 2 3 4 5 6 7 8 9 time [ms] 1 2 3 4 5 6 7 8 9 time [ms] 300 kHz, IOUT = 1 mA 4 VON/OFF -1 0 VON/OFF [V] 0 VON/OFF 600 kHz, IOUT = 1 mA 600 kHz, IOUT = 100 mA 4 2 0 2 VON/OFF -1 0 0 2 -1 0 1 2 3 4 5 6 7 8 9 time [ms] VOUT 0 2 1 2 3 4 5 6 7 8 9 time [ms] 1 2 3 4 5 6 7 8 9 time [ms] 4 VOUT VON/OFF [V] 0 VON/OFF [V] 0 2 VOUT [V] 2 4 VOUT VOUT [V] VON/OFF [V] VOUT 50 300 kHz, IOUT = 100 mA 2 0 2 0 VON/OFF -1 0 Seiko Instruments Inc. VOUT [V] -1 0 0 2 1 2 3 4 5 6 7 8 9 time [ms] VOUT [V] 0 2 VOUT [V] 0 2 VON/OFF [V] 2 4 VOUT VOUT [V] VOUT VON/OFF [V] 100 kHz, IOUT = 100 mA 4 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series (3) Load Fluctuations 100 kHz, IOUT : 100 A 100 mA IOUT 100 mA 100 A 3.60 100 kHz, IOUT : 100 mA 100 A IOUT 3.40 VOUT [0.2 V / div] 3.20 -0.2 0 0.2 0.4 0.6 1.0 0.8 time [ms] 100 mA 100 A IOUT 3.40 VOUT [0.2 V / div] 3.20 -0.5 0 0.5 1.0 1.5 2.5 2.0 time [ms] -0.2 3.20 0 0.2 0.4 0.6 1.0 0.8 time [ms] 40 60 time [ms] 70 80 3.20 90 3.60 VOUT [0.2 V / div] 3.40 -10 0 10 20 30 50 40 60 time [ms] 70 80 3.20 90 600 kHz, IOUT : 100 mA 0.1 mA 3.40 VOUT [0.2 V / div] 50 100 mA 100 A 3.00 3.5 4.5 3.0 4.0 3.60 100 mA 100 A 20 30 3.80 600 kHz, IOUT : 0.1 mA 100 mA IOUT 0 10 300 kHz, IOUT : 100 mA 100 A 3.60 100 mA 100 A 3.40 -10 300 kHz, IOUT : 100 A 100 mA IOUT 3.60 VOUT [0.2 V / div] 3.00 1.4 1.8 1.2 1.6 3.80 IOUT 3.80 100 mA 100 A 3.60 VOUT [0.2 V / div] 3.00 1.4 1.8 1.2 1.6 Seiko Instruments Inc. 3.40 3.20 -0.5 0 0.5 1.5 1.0 2.0 time [ms] 2.5 3.00 3.0 51 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 0.2 0.4 -0.2 0.6 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] -0.2 3.45 3.40 3.35 3.30 3.25 0 0.2 0.4 VIN [V] 3.0 2.5 2.0 1.5 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] 52 0.2 0.4 0.6 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] VIN [V] 3.45 3.40 3.35 3.30 3.25 0 0.4 0.6 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] 3.45 3.40 3.35 3.30 3.25 0 0.2 0.4 0.6 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] 600 kHz, VIN = 2.64 V 1.98 V VOUT [V] VIN [V] 600 kHz, VIN = 1.98 V 2.64 V -0.2 0.2 3.0 2.5 2.0 1.5 -0.2 0.6 3.0 2.5 2.0 1.5 0 300 kHz, VIN = 2.64 V 1.98 V VOUT [V] VIN [V] 300 kHz, VIN = 1.98 V 2.64 V 3.45 3.40 3.35 3.30 3.25 VOUT [V] 0 100 kHz, VIN = 2.64 V 1.98 V VOUT [V] 3.45 3.40 3.35 3.30 3.25 3.0 2.5 2.0 1.5 3.0 2.5 2.0 1.5 -0.2 Seiko Instruments Inc. 3.45 3.40 3.35 3.30 3.25 0 0.2 0.4 0.6 1.0 1.4 1.8 0.8 1.2 1.6 time [ms] VOUT [V] -0.2 100 kHz, VIN = 1.98 V 2.64 V VIN [V] 3.0 2.5 2.0 1.5 VOUT [V] VIN [V] (4) Input Voltage Fluctuations (IOUT = 100 mA) STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Reference Data Use this reference data to choose the external parts. This reference data makes it possible to choose the recommended external part based on the application and characteristics data. 1. External Parts for Reference Data Table 32 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for External Condition Product Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 S-8357F33 S-8357F50 S-8356M50 S-8357B33 S-8358B33 S-8357B50 S-8356M50 S-8357B33 S-8358B33 S-8357B50 S-8357F33 S-8356M50 S-8357N33 S-8357N50 S-8356Q33 S-8356Q50 Oscillation Frequency Output Voltage Control System 300 kHz 300 kHz 300 kHz 100 kHz 100 kHz 100 kHz 300 kHz 100 kHz 100 kHz 100 kHz 300 kHz 300 kHz 600 kHz 600 kHz 600 kHz 600 kHz 3.3 V 5.0 V 5.0 V 3.3 V 3.3 V 5.0 V 5.0 V 3.3 V 3.3 V 5.0 V 3.3 V 5.0 V 3.3 V 5.0 V 3.3 V 5.0 V PWM PWM PWM/PFM PWM PWM/PFM PWM PWM/PFM PWM PWM/PFM PWM PWM PWM/PFM PWM PWM PWM/PFM PWM/PFM Inductor Transistor CDRH104R-220 S-90N0312SMA Diode Output capacitor M1FH3 F93 (16 V, 47 F) x 2 CDRH104R-470 S-90N0442SUA CDRH8D28-220 S-90N0212SMA CDRH8D28-470 F93 (16 V, 47 F) CXLP120-220 MA2Z748 F92 (6.3 V, 47 F) CDRH8D28-100 M1FH3 F93 (16 V, 47 F) Seiko Instruments Inc. 53 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series The properties of the external parts are shown below. Table 33 Properties of External Parts Compornent Product Name Inductor CDRH104R-220 CDRH104R-470 CDRH8D28-100 CDRH8D28-220 CDRH8D28-470 CXLP120-220 Diode Capacitor (Output Capacitance) Transistor (Nch FET) M1FH3 MA2Z748 F93 F92 S-90N0212SMA S-90N0312SMA S-90N0442SUA *1. *2. *3. *4. *5. *6. *7. *8. *9. *10. Manufacturer Characteristics 22 H, DCR*1 = 73 m, IMAX.*2 = 2.5 A, Sumida Corporation Component height = 4.0 mm 47 H, DCR*1 = 128 m, IMAX.*2 = 1.9 A, Component height = 4.0 mm 10 H, DCR*1 = 47 m, IMAX.*2 = 2.7 A, Component height = 3.0 mm 22 H, DCR*1 = 99 m, IMAX.*2 = 1.8 A, Component height = 3.0 mm 47 H, DCR*1 = 195 m, IMAX.*2 = 1.25 A, Component height = 3.0 mm 22 H, DCR*1 = 590 m, IMAX.*2 = 0.55 A, Sumitomo Special Metals Co., Ltd. Component height = 1.2 mm *3 *4 Shindengen Electric Manufacturing Co., Ltd. VF = 0.3 V, IF = 1.5 A *3 VF = 0.4 V, IF*4 = 0.3 A Matsushita Electric Industrial Co., Ltd. Nichicon Corporation 16 V, 47 F 6.3 V, 47 F VDSS *5 = 20 V max., VGSS*6 = 12 V max., CISS*7 = 190 pF, RDS(ON)*8 = 0.16 max. Seiko Instruments Inc. (VGS*9 = 2.5 V, ID*10 = 0.5 A) VDSS *5 = 20 V max., VGSS*6 = 8 V max., CISS*7 = 170 pF, RDS(ON)*8 = 0.14 max. (VGS*9 = 2.5 V, ID*10 = 0.5 A) VDSS *5 = 20 V max.,VGSS*6 = 8 V max., CISS*7 = 390 pF, RDS(ON)*8 = 0.07 max. (VGS*9 = 2.5 V, ID*10 = 2 A) Direct current resistance Maximum allowable current Forward voltage Forward current Drain source voltage Gate source voltage Input capacitance Drain source ON-resistance Gate source voltage Drain current Caution The values shown in the characteristics column of Table 33 above are based on the materials provided by each manufacture. However, consider the characteristics of the original materials when using the above products. 54 Seiko Instruments Inc. STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 2. Output Current (IOUT) vs. Efficiency () Characteristics, Output Current (IOUT) vs. Output Voltage (VOUT) Characteristics The following shows the actual (a) Output current (IOUT) vs. Efficiency () characteristics and (b) Output current (IOUT) vs. Output voltage (VOUT) characteristics under the conditions of No. 1 to 16 in Table 32. Condition 1 S-8357F33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 IOUT 10 [mA] 100 3.3 3.2 3.1 3.0 0.1 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 2 S-8357F50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 10 IOUT [mA] 100 5.0 4.9 4.8 4.7 0.1 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 3 S-8356M50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 IOUT 10 [mA] 100 1000 5.0 4.9 4.8 4.7 0.1 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 4 S-8357B33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 IOUT 10 [mA] 100 1000 3.3 3.2 3.1 3.0 0.1 Seiko Instruments Inc. VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 55 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Condition 5 S-8358B33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 IOUT 10 [mA] 100 3.3 3.2 3.1 3.0 0.1 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 6 S-8357B50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 5.2 100 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 IOUT 10 [mA] 100 5.0 4.9 4.8 4.7 0.1 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 7 S-8357M50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 10 IOUT [mA] 100 5.0 4.9 4.8 4.7 0.1 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 8 S-8357B33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 56 1 10 IOUT [mA] 100 1000 3.3 3.2 3.1 3.0 0.1 Seiko Instruments Inc. VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Condition 9 S-8358B33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 10 IOUT [mA] 100 3.3 3.2 3.1 3.0 0.1 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 10 S-8357B50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 10 IOUT [mA] 100 5.0 4.9 4.8 4.7 0.1 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 11 S-8357F33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 10 IOUT [mA] 100 3.3 3.2 3.1 3.0 0.1 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 12 S-8356M50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 10 IOUT [mA] 100 5.0 4.9 4.8 1000 4.7 0.1 Seiko Instruments Inc. VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 57 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Condition 13 S-8357N33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 20 0.1 1 10 IOUT [mA] 100 3.3 3.2 3.1 3.0 0.1 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 14 S-8357N50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 20 0.1 1 10 IOUT [mA] 100 5.0 4.9 4.8 4.7 0.1 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 Condition 15 S-8356Q33 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 3.5 3.4 VOUT [V] [%] 80 60 40 20 0.1 10 IOUT [mA] 100 3.2 3.1 VIN = 1.8 V VIN = 2.7 V 1 3.3 3.0 0.1 1000 VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] 100 1000 Condition 16 S-8356Q50 (a) Output current (IOUT) vs. Efficiency () (b) Output current (IOUT) vs. Output voltage (VOUT) 100 5.2 5.1 VOUT [V] [%] 80 60 40 20 0.1 IOUT 58 10 [mA] 100 4.9 4.8 VIN = 3.0 V VIN = 4.0 V 1 5.0 1000 4.7 0.1 Seiko Instruments Inc. VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] 100 1000 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series 3. Output Current (IOUT) vs. Ripple Voltage (Vr) Characteristics The following shows the actual Output current (IOUT) vs. Ripple voltage (Vr) characteristics and (b) Output current (IOUT) vs. Output voltage (VOUT) characteristics under the conditions of No. 1 to 16 in Table 32. Condition 1 S-8357F33 100 150 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V Vr [mV] Vr [mV] 150 Condition 2 S-8357F50 50 0 0.1 1 10 IOUT [mA] 100 100 150 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 50 0 0.1 1 10 IOUT [mA] 100 1 10 IOUT [mA] 100 1 100 1000 100 1000 100 1000 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 1 10 IOUT [mA] VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 50 150 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 50 0 0.1 1000 1 10 IOUT [mA] Condition 8 S-8357B33 Vr [mV] Vr [mV] 100 100 0 0.1 1000 Condition 7 S-8356M50 150 100 50 150 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 50 0 0.1 10 IOUT [mA] Condition 6 S-8357B50 Vr [mV] Vr [mV] 100 100 0 0.1 1000 Condition 5 S-8358B33 150 1 Condition 4 S-8357B33 Vr [mV] Vr [mV] 150 50 0 0.1 1000 Condition 3 S-8356M50 100 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 10 IOUT [mA] 100 1000 100 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 50 0 0.1 Seiko Instruments Inc. 1 10 IOUT [mA] 59 STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.2_01 S-8355/56/57/58 Series Condition 9 S-8358B33 100 150 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V Vr [mV] Vr [mV] 150 Condition 10 S-8357B50 50 0 0.1 1 IOUT 10 [mA] 100 100 150 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 50 0 0.1 1 10 IOUT [mA] 100 60 80 20 1 10 IOUT [mA] 100 1 10 IOUT [mA] 1000 100 1000 100 1000 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 40 100 VIN = 1.8 V VIN = 2.7 V 80 40 20 60 100 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V 1 10 IOUT [mA] Condition 16 S-8356Q50 60 0 0.1 60 0 0.1 1000 Vr [mV] Vr [mV] 80 1000 20 Condition 15 S-8356Q33 100 100 50 100 VIN = 0.9 V VIN = 1.8 V VIN = 2.7 V 40 0 0.1 10 IOUT [mA] Condition 14 S-8357N50 Vr [mV] Vr [mV] 80 100 0 0.1 1000 Condition 13 S-8357N33 100 1 Condition 12 S-8356M50 Vr [mV] Vr [mV] 150 50 0 0.1 1000 Condition 11 S-8357F33 100 VIN = 2.0 V VIN = 3.0 V VIN = 4.0 V VIN = 3.0 V VIN = 4.0 V 60 40 20 1 10 IOUT [mA] 100 1000 0 0.1 Seiko Instruments Inc. 1 10 IOUT [mA] 2.90.2 1 2 3 0.16 +0.1 -0.05 0.950.1 1.90.2 0.40.1 No. MP003-A-P-SD-1.1 TITLE SOT233-A-PKG Dimensions MP003-A-P-SD-1.1 No. SCALE UNIT mm Seiko Instruments Inc. +0.1 1.5 -0.05 4.00.1 2.00.1 1.10.1 0.250.05 1.60.1 4.00.1 2.850.2 3 2 1 Feed direction No. MP003-A-C-SD-1.1 TITLE No. SOT233-A-Carrier Tape MP003-A-C-SD-1.1 SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.00.3 Enlarged drawing in the central part o130.2 (60) (60) No. MP003-A-R-SD-1.1 TITLE SOT233-A-Reel No. MP003-A-R-SD-1.1 SCALE UNIT QTY. 3,000 mm Seiko Instruments Inc. 2.90.2 1.90.2 4 5 1 2 +0.1 0.16 -0.06 3 0.950.1 0.40.1 No. MP005-A-P-SD-1.2 TITLE No. SOT235-A-PKG Dimensions MP005-A-P-SD-1.2 SCALE UNIT mm Seiko Instruments Inc. 4.00.1(10 pitches:40.00.2) +0.1 o1.5 -0 2.00.05 +0.2 o1.0 -0 0.250.1 4.00.1 1.40.2 3.20.2 3 2 1 4 5 Feed direction No. MP005-A-C-SD-2.1 TITLE SOT235-A-Carrier Tape No. MP005-A-C-SD-2.1 SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.00.3 Enlarged drawing in the central part o130.2 (60) (60) No. MP005-A-R-SD-1.1 SOT235-A-Reel TITLE No. MP005-A-R-SD-1.1 SCALE QTY. UNIT mm Seiko Instruments Inc. 3,000 4.50.1 1.50.1 1.60.2 1 2 3 1.50.1 1.50.1 0.40.05 45 0.40.1 0.40.1 0.450.1 No. UP003-A-P-SD-1.1 TITLE SOT893-A-PKG Dimensions No. UP003-A-P-SD-1.1 SCALE UNIT mm Seiko Instruments Inc. +0.1 o1.5 -0 4.00.1(10 pitches : 40.00.2) 2.00.05 o1.5 +0.1 -0 5 max. 0.30.05 8.00.1 2.00.1 4.750.1 Feed direction No. UP003-A-C-SD-1.1 TITLE SOT893-A-Carrier Tape No. UP003-A-C-SD-1.1 SCALE UNIT mm Seiko Instruments Inc. 16.5max. 13.00.3 Enlarged drawing in the central part (60) (60) No. UP003-A-R-SD-1.1 SOT893-A-Reel TITLE No. UP003-A-R-SD-1.1 SCALE UNIT QTY. mm Seiko Instruments Inc. 1,000 R(0.075) 6 5 4 1 2 3 (0.125) 0.140.05 0.20.08 0.20.08 1.80.15 0.50.1 0.80.05 0.50.1 The heatsink of back side has different electric potential depending on the product. Confirm specifications of each product. Do not use it as the function of electrode. No. BD006-A-P-SD-3.0 TITLE SNB6B-A-PKG Dimensions No. BD006-A-P-SD-3.0 SCALE UNIT mm Seiko Instruments Inc. o1.50.1 4.00.1 2.00.05 o1.10.1 0.250.05 1.10.1 4.00.1 2.20.1 3 2 1 4 5 6 Feed direction No. BD006-A-C-SD-2.1 TITLE SNB6B-A-Carrier Tape BD006-A-C-SD-2.1 No. SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.00.3 Enlarged drawing in the central part o130.2 No. BD006-A-R-SD-1.1 TITLE SNB6B-A-Reel No. BD006-A-R-SD-1.1 SCALE UNIT QTY. mm Seiko Instruments Inc. 3,000 * * * * * * The information described herein is subject to change without notice. Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. 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