S-1702 Series www.sii-ic.com SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 (c) Seiko Instruments Inc., 2008-2012 The S-1702 Series, developed based on CMOS technology, is a 150 mA output positive voltage regulator with a low dropout voltage, a high-accuracy output voltage, and low current consumption. The S-1702 Series includes a voltage regulator with high-accuracy output voltage of 1.0% allowing to use a ceramic capacitor of 1.0 F or more, and a voltage detector that monitors the output/input voltage of the regulator. It also includes an overcurrent protector that prevents the output current from exceeding the current capacitance of the output transistor and an output forcible discharge circuit for the regulator operation off. Small SNT-6A package is available for the S-1702 Series. And an external small capacitor can be used, enabling high-density mounting. Its super-low current consumption makes the S-1702 Series ideal for mobile devices. Features Regulator block * Output voltage: * High-accuracy output voltage: * Super-low current consumption: * High peak current capability: * Built-in on/off discharge circuit: * High ripple rejection: * Built-in overcurrent protector: 1.5 V to 5.5 V, selectable in 0.05 V step 1.0% Current consumption of regulator block: 9 A typ., 16 A max. 150 mA output (VIN VOUT(S) + 1.0 V)*1 Longer battery life, discharges output load instantaneously 70 dB typ. (1.0 kHz) Limits overcurrent of output transistor Detector block * Output voltage: 1.3 V to 5.2 V, selectable in 0.05 V step * Built-in high-accuracy voltage detector: 1.0% Monitoring output/input or monitoring external input by option (detector output) * External reset input: Forcible assertion of detector output by external reset pin (RESX) input Overall * Correlation temperature gradient in the regulator and the detector blocks *2 * Super-low current consumption: During operation : 10 A typ., 18 A max. * Operation temperature range: Ta = -40C to +85C *3 * Lead-free, Sn 100%, halogen-free *1. *2. *3. Attention should be paid to the power dissipation of the package when the output current is large. Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins Refer to " Product Name Structure" for details. Applications * Wireless power supply circuit block for cellular phone * Power supply circuit block for health care product * Power supply circuit block for various mobile devices Package * SNT-6A Seiko Instruments Inc. 1 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Block Diagrams 1. S-1702 Series A type to H type ON / OFF VOUT Overcurrent protector Product Type Detector Monitor Voltage ON/OFF circuit A B C D E F G H Reference voltage circuit RESX Reset circuit Logic circuit VSS VIN Reference voltage circuit Voltage detector Delay circuit Output circuit VOUT VOUT VOUT VOUT VIN VIN VIN VIN Discharge Shunt Function by ON / OFF and RESX Pins Control by Control by ON / OFF Pin RESX Pin { { x x { { x x { x { x { x { x VDOUT Figure 1 2. S-1702 Series J type and K type (external input detection type) ON / OFF VOUT Overcurrent protector Product Type J ON/OFF circuit K Reference voltage circuit SENSE Reset circuit Logic circuit VSS VIN Reference voltage circuit Voltage detector Delay circuit Output circuit VDOUT Figure 2 2 Seiko Instruments Inc. Detector Monitor Voltage External input External input Discharge Shunt Function by ON / OFF Pin { x SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. S-1702 Series L type to N type, P type (external delay type) ON / OFF VOUT Overcurrent protector L M N P ON/OFF circuit Reference voltage circuit CD Reset circuit Product Type Detector Monitor Voltage VOUT VOUT VIN VIN Discharge Shunt Function by ON / OFF Pin { x { x Logic circuit VSS VIN Reference voltage circuit Voltage detector Delay circuit Output circuit VDOUT Figure 3 Seiko Instruments Inc. 3 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Product Name Structure 1. Product name S-1702 x x x xx - I6T1 x Environmental code U : Lead-free (Sn 100%), halogen-free G : Lead-free (for details, please contact our sales office) Package abbreviation and IC packing specifications I6T1: SNT-6A, tape product *1 Output voltage value of regulator and detection voltage value of detector 00 and 01 (two-digit numeric option code) *3 Input type of RESX and ON / OFF pins A to H, J (one-digit alphabetical option code) Output type of VDOUT pin*4 A to H, J (one-digit alphabetical option code) *5 Product type A to H, J to N, P (one-digit alphabetical option code) *1. *2. *3. *4. *5. 4 Refer to the tape drawing. Refer to Table 4 of "2. Function list according to product type". Refer to Table 3 of "2. Function list according to product type". Refer to Table 2 of "2. Function list according to product type". Refer to Table 1 of "2. Function list according to product type". Seiko Instruments Inc. *2 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. Function list according to product type Table 1 Option Code A B C D E F G H J K L M N P ON / OFF Pin Application ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF ON / OFF RESX RESX RESX RESX RESX RESX RESX RESX SENSE SENSE CD CD CD CD Table 2 Option Code A B C D E F G H J RESX Pin Application Product Types Delay Type Internal Internal Internal Internal Internal Internal Internal Internal Internal Internal External External External External Detector Monitor Voltage VOUT VOUT VOUT VOUT VIN VIN VIN VIN VSENSE VSENSE VOUT VOUT VIN VIN Discharge Shunt Function Control by Control by ON / OFF Pin RESX Pin { { x x { { x x { x { x { x { x { x { x { x - - - - - - Output Types of VDOUT Pin Output Type Nch open drain output CMOS output (VOUT drive) CMOS output (VIN drive) Nch open drain output CMOS output (VOUT drive) CMOS output (VIN drive) Nch open drain output CMOS output (VOUT drive) CMOS output (VIN drive) Hysteresis 5.0% 5.0% 5.0% 2.5% 2.5% 2.5% None None None Seiko Instruments Inc. 5 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Table 3 Option Code RESX Pin A B C D E F G H J Table 4 No pull-up/pull-down resistor No pull-up/pull-down resistor No pull-up/pull-down resistor Pull-up Pull-up Pull-up Pull-down Pull-down Pull-down Output Voltage 3.1 V 1.0% 3.1 V 1.0% 00 01 Remark No pull-up/pull-down resistor Pull-up Pull-down No pull-up/pull-down resistor Pull-up Pull-down No pull-up/pull-down resistor Pull-up Pull-down Detection Voltage 2.75 V 1.0% 2.60 V 1.0% Please contact our sales office for products with an output voltage or detection voltage other than those specified above. Package Package Name SNT-6A 6 ON / OFF Pin Output Voltage Values of Regulator and Detection Voltage Values of Detector Option Code 3. Input Types of RESX and ON / OFF Pins Package PG006-A-P-SD Drawing Code Tape Reel PG006-A-C-SD PG006-A-R-SD Seiko Instruments Inc. Land PG006-A-L-SD SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Pin Configuration 1. SNT-6A Table 5 Top view 1 2 3 6 5 4 Pin No. Symbol 1 2 VIN ON / OFF RESX Figure 4 3 CD SENSE 4 5 6 VSS VDOUT VOUT Seiko Instruments Inc. Description Input voltage pin Power-off pin External reset pin (S-1702Axx to Hxx) External delay capacitor connection pin (S-1702Lxx to Nxx, Pxx) Detector SENSE pin (S-1702Jxx, Kxx) GND pin Detector output voltage pin Regulator output voltage pin 7 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Absolute Maximum Ratings Table 6 Item (Ta = +25C unless otherwise specified) Absolute Maximum Rating Unit Symbol VSS - 0.3 to VSS + 7.0 VSS - 0.3 to VIN + 0.3 VSS - 0.3 to VIN + 0.3 VSS - 0.3 to VIN + 0.3 VSS - 0.3 to VSS + 7.0 VSS - 0.3 to VIN + 0.3 VSS - 0.3 to VSS + 7.0 VSS - 0.3 to VIN + 0.3 400*1 -40 to +85 -40 to +125 VIN VON / OFF VRESX VCD VSENSE VOUT Input voltage Regulator output voltage Detector output Nch open drain output VDOUT voltage CMOS output Power dissipation PD Operation ambient temperature Topr Storage temperature Tstg *1. When mounted on board [Mounted board] (1) Board size : 114.3 mm x 76.2 mm x t1.6 mm (2) Board name : JEDEC STANDARD51-7 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) 500 400 300 200 100 0 0 50 100 150 Ambient temperature (Ta) [C] Figure 5 8 V V V V V V V V mW C C Power Dissipation of Package Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Electrical Characteristics 1. Common to series (S-1702Axx to Hxx, Jxx to Nxx, Pxx) Table 7 (1 / 2) (Ta = +25C unless otherwise specified) Test Min. Typ. Max. Unit Circuit Entire circuit Item Symbol Current consumption during operation*1 ISS Condition VIN = VOUT(S) + 1.0 V - 10 18 A 2 Min. Typ. Max. Unit Test Circuit Regulator block Item Symbol Output voltage*2 Output current *3 Dropout voltage*4 Line regulation Condition VOUT(E) VIN = VOUT(S) + 1.0 V, IOUT = 30 mA IOUT VIN > VOUT(S) + 1.0 V 1.5 V < VOUT(S) 2.0 V 2.0 V < VOUT(S) 2.5 V IOUT = 100 mA 2.5 V < VOUT(S) 3.0 V 3.0 V < VOUT(S) 3.3 V 3.3 V < VOUT(S) 5.5 V Vdrop VOUT1 VIN * VOUT VOUT(S) + 0.5 V < VIN < 6.5 V, IOUT = 30 mA VOUT(S) VOUT(S) x0.99 *8 150 - - 0.54 - 0.23 - 0.2 - 0.15 - 0.14 VOUT(S) x1.01 - 0.58 0.35 0.3 0.23 0.21 V 1 mA V V V V V 3 1 1 1 1 1 - 0.05 0.2 %/V 1 - 20 40 mV 1 - 100 300 ppm/ C 1 - 9 16 A 2 2 - 6.5 V - VIN VIN = VOUT(S) + 1.0 V, 10 A < IOUT < 100 mA VIN = VOUT(S) + 1.0 V, IOUT = 30 mA, *9 -40C Ta +85C VIN = VOUT(S) + 1.0 V, RESX and ON / OFF pins enabled for operation, no load - VSH1 VIN = VOUT(S) + 1.0 V, RL = 1.0 k 1.2 - - V 4 VSL1 VIN = VOUT(S) + 1.0 V, RL = 1.0 k - - 0.3 V 4 ON / OFF pin input current "H" ISH1 VIN = 6.5 V, VON / OFF = 6.5 V ON / OFF pin input current "L" ISL1 VIN = 6.5 V, VON / OFF = 0 V -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 - - - - - - 0.1 0.1 0.1 0.1 0.1 0.1 A A A A A A 4 4 4 4 4 4 - 70 - dB 5 - 65 - dB 5 - 300 - mA 5 Load regulation Output voltage temperature coefficient *5 Current consumption during operation*1 Input voltage ON / OFF pin input voltage "H" ON / OFF pin input voltage "L" Ripple rejection Short-circuit current VOUT2 VOUT Ta * VOUT ISS1 RR ISHORT S-1702xxA S-1702xxD S-1702xxG S-1702xxA S-1702xxD S-1702xxG VIN = VOUT(S) + 1.0 V, 1.5 V VOUT(S) < 3.1 V f = 1.0 kHz, Vrip = 0.5 Vrms, 3.1 V VOUT(S) 5.5 V IOUT = 30 mA VIN = VOUT(S) + 1.0 V, ON / OFF pin enabled for operation, VOUT = 0 V Seiko Instruments Inc. 9 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Table 7 (2 / 2) (Ta = +25C unless otherwise specified) Detector block Item Symbol Detection voltage*6 Hysteresis width -VDET VHYS Current consumption ISS2 *1 during operation Input voltage Detection voltage temperature coefficient *7 VIN -VDET Ta * -VDET Condition Min. Typ. Max. -VDET(S) -VDET(S) -VDET(S) x1.01 x0.99 -VDET -VDET -VDET S-1702xAx, S-1702xBx, S-1702xCx x0.035 x0.05 x0.065 -VDET -VDET -VDET S-1702xDx, S-1702xEx, S-1702xFx x0.01 x0.025 x0.04 -VDET S-1702xGx, S-1702xHx, S-1702xJx - 0 x0.015 VIN = -VDET(S) + 1.5 V - 2.4 4.0 1.3 V -VDET(S) < 2.3 V VIN = 5.5 V - 2.6 4.5 VIN = -VDET(S) + 1.5 V - 2.2 3.5 2.3 V -VDET(S) < 5.2 V VIN = 5.5 V - 2.3 4.0 - 0.8 - 6.5 - Ta = -40C to +85C*9 - 100 400 Unit Test Circuit V 6 V 6 V 6 V 6 A A A A V 2 2 2 2 - ppm/ C 6 *1. Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins *2. VOUT(S): Set output voltage VOUT(E): Actual output voltage at the fixed load The output voltage when fixing IOUT (= 30 mA) and inputting VOUT(S) + 1.0 V *3. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current. *4. Vdrop = VIN1 - (VOUT3 x 0.98) VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA. VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltage. *5. The change in temperature [mV/C] of the regulator output voltage is calculated using the following equation. VOUT Ta *1. *2. *3. [mV/C]*1 = VOUT(S) [V]*2 x VOUT Ta * VOUT [ppm/C]*3 / 1000 The change in temperature of the output voltage Set output voltage Output voltage temperature coefficient *6. -VDET(S) : Set detection voltage -VDET : Actual detection voltage *7. The change in temperature [mV/C] of the detector detection voltage is calculated using the following equation. -VDET Ta *1. *2. *3. [mV/C]*1 = -VDET(S) (Typ.) [V]*2 x -VDET Ta * -VDET [ppm/C]*3 / 1000 The change in temperature of the detection voltage Set detection voltage Detection voltage temperature coefficient *8. The output current can be at least this value. Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation of the package when the output current is large. This specification is guaranteed by design. *9. Since products are not screened at high and low temperatures, the specification for this temperature range is guaranteed by design, not tested in production. 10 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. Discharge shunt circuit (discharge shunt function) (S-1702Axx, Bxx, Cxx, Exx, Fxx, Gxx, Jxx, Lxx, Nxx) Table 8 Item "L" output, Nch on resistor 3. Symbol RLOW Condition VDS = 0.5 V, VGS = 6.5 V (Ta = +25C unless otherwise specified) Test Min. Typ. Max. Unit Circuit - 100 - 3 Detector output circuit (VDOUT pin) Table 9 (Ta = +25C unless otherwise specified) Nch open drain output (S-1702xAx, xDx, xGx) Item Symbol Condition Output transistor: Nch, VDS = 0.5 V, VDD = 1.2 V Output transistor: Nch, Leakage current ILEAK VDS = 5.5 V, VDD = 5.5 V CMOS output (S-1702xBx, xCx, xEx, xFx, xHx, xJx) Output current Item IDOUT1 Symbol IDOUT2 Output current IDOUT3 4. Condition Output transistor: Nch, VDS = 0.5 V, VIN = 1.2 V Output transistor: Pch, VDS = 0.5 V, VIN = 5.5 V Min. Typ. Max. Unit Test Circuit 1.36 2.55 - mA 7 - - 100 nA 7 Min. Typ. Max. Unit Test Circuit 1.36 2.55 - mA 7 1.71 2.76 - mA 8 RESX pin (S-1702Axx, Bxx, Cxx, Dxx, Exx, Fxx, Gxx, Hxx) Table 10 Item Symbol Condition RESX pin input voltage "H"*1 VSH2 RESX pin input voltage "L" VSL2 VIN = VOUT(S) + 1.0 V, RL = 1.0 k VIN = VOUT(S) + 1.0 V, RL = 1.0 k S-1702xxA RESX pin input current "H" ISH2 VIN = 6.5 V, VRESX = 6.5 V S-1702xxB S-1702xxC S-1702xxA RESX pin input current "L" ISL2 VIN = 6.5 V, VRESX = 0 V S-1702xxB S-1702xxC *1. VOUT(S): specified output voltage value 5. (Ta = +25C unless otherwise specified) Test Min. Typ. Max. Unit Circuit 1.2 - -0.1 -0.1 -0.1 -0.1 -0.1 -0.1 - - - - - - - - - 0.3 0.1 0.1 0.1 0.1 0.1 0.1 V V A A A A A A 4 4 4 4 4 4 4 4 Pull-up / pull-down resistor value of ON / OFF pin and RESX pin (S-1702xxB, xxC, xxD, xxE, xxF xxG, xxH, xxJ) Table 11 Item Pull-up / pull-down resistor Symbol RPULL Condition - Seiko Instruments Inc. (Ta = +25C unless otherwise specified) Test Min. Typ. Max. Unit Circuit - 2.0 - M 4 11 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 6. Response time Table 12 Internal delay type (S-1702Axx, Bxx, Cxx, Dxx, Exx, Fxx, Gxx, Hxx, Jxx, Kxx) (Ta = +25C unless otherwise specified) Item Response time Symbol TPLH1 Condition Min. Typ. Max. Unit Test Circuit - - - 90 s 6 Condition Min. Typ. Max. Unit Test Circuit - 30 - ms 9 External delay type (S-1702Lxx, Mxx, Nxx, Pxx) Item Response time 12 Symbol TPLH2 CD = 4.7 nF Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Test Circuits 1. VIN + VOUT A A + + ON / OFF V RESX VDOUT VSS Set to power on The portion enclosed by dotted lines is not required for CMOS output products. 2. VIN VOUT + ON / OFF RESX VDOUT VSS Set to VIN or GND The portion enclosed by dotted lines is not required for CMOS output products. A Figure 6 3. Figure 7 VIN + VOUT A A + + ON / OFF V RESX VDOUT VSS Set to VIN or GND The portion enclosed by dotted lines is not required for CMOS output products. 4. + 6. VIN VOUT ON / OFF RESX VDOUT VSS Set to power on + V ON / OFF RESX (SENSE) RL + A + V VDS Figure 12 ON / OFF RESX (CD) VIN VSS VSS VOUT VDOUT + V Figure 11 8. VIN VOUT ON / OFF RESX VDOUT VSS VIN The portion enclosed by dotted lines is not required for CMOS output products. Figure 10 9. RL Figure 9 The portion enclosed by dotted lines is not required for CMOS output products. 7. + A + V The portion enclosed by dotted lines is not required for CMOS output products. Figure 8 5. A VIN VOUT ON / OFF RESX VDOUT VSS VIN VOUT ON / OFF RESX VDOUT VSS VDS + V + A Figure 13 VOUT VDOUT + V The portion enclosed by dotted lines is not required for CMOS output products. Figure 14 Seiko Instruments Inc. 13 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Standard Circuits 1. S-1702Axx, Bxx, Cxx, Dxx, Exx, Fxx, Gxx, Hxx Input ON / OFF *3 R VIN VOUT RESX VDOUT VSS *1 CIN VR output VD output CL *2 GND Single GND *1. *2. *3. CIN is a capacitor for stabilizing the input. A ceramic capacitor of 1.0 F or more can be used for CL. R is not required for a CMOS output product. Figure 15 2. S-1702Jxx, Kxx Input ON / OFF *1 CIN RESX (SENSE) VIN VSS *3 R VOUT VR output VDOUT VD output CL *2 GND Single GND *1. *2. *3. CIN is a capacitor for stabilizing the input. A ceramic capacitor of 1.0 F or more can be used for CL. R is not required for a CMOS output product. Figure 16 3. S-1702Lxx, Mxx, Nxx, Pxx Input ON / OFF *1 CIN RESX (CD) VIN VSS *3 R VOUT VR output VDOUT VD output CL *2 Single GND *1. *2. *3. GND CIN is a capacitor for stabilizing the input. A ceramic capacitor of 1.0 F or more can be used for CL. R is not required for a CMOS output product. Figure 17 Caution The above connection diagrams and constants will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constants. 14 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Application Conditions Input capacitor (CIN): 1.0 F or more Output capacitor (CL): 1.0 F or more ESR of output capacitor: 10 or less Caution Generally a series regulator may cause oscillation, depending on the selection of external parts. Confirm that no oscillation occurs in the application for which the above capacitors are used. Selection of VIN Input and VOUT Output Capacitors (CIN, CL) The S-1702 Series requires an output capacitor (CL) between the VOUT and VSS pins for phase compensation. A ceramic capacitor with a capacitance of 1.0 F or more provides a stable operation in all temperature ranges. When using an OS capacitor, tantalum capacitor, or aluminum electrolytic capacitor, a capacitor with a capacitance of 1.0 F or more and an ESR of 10 or less is required. The output overshoot and undershoot values, which are transient response characteristics, vary depending on the output capacitor value. The required capacitance value for the input capacitor differs depending on the application. The recommended application values are CIN = 1.0 F or more and CL = 1.0 F or more; however, perform thorough evaluation using the actual device, including evaluation of temperature characteristics. Seiko Instruments Inc. 15 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Explanation of Terms 1. Regulator block 1. 1 Low dropout voltage regulator This voltage regulator has the low dropout voltage due to its built-in transistor with low on-resistance. 1. 2 Low ESR A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1702 Series enables use of a low ESR capacitor, such as a ceramic capacitor, for the output-side capacitor (CL). A capacitor whose ESR is 10 or less can be used. 1. 3 Output voltage (VOUT) The accuracy of the output voltage is ensured at 1.0% under the specified conditions of fixed input voltage*1, fixed output current, and fixed temperature. *1. Differs depending on the product. Caution If the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. Refer to " Electrical Characteristics" and " Characteristics (Typical Data)" for details. VOUT 1 V IN * VOUT Line regulation 1. 4 Indicates the dependency of the output voltage on the input voltage. That is, the values show how much the output voltage changes due to a change in the input voltage with the output current remaining unchanged. 1. 5 Load regulation (VOUT2) Indicates the dependency of the output voltage on the output current. That is, the values show how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged. 1. 6 Dropout voltage (Vdrop) Indicates the difference between the input voltage VIN1, which is the input voltage (VIN) at the point where the output voltage has fallen to 98% of the output voltage value VOUT3 after VIN was gradually decreased from VIN = VOUT(S) + 1.0 V, and the output voltage at that point (VOUT3 x 0.98). Vdrop = VIN1 - (VOUT3 x 0.98) 16 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 1. 7 VOUT * VOUT Ta Output voltage temperature coefficient The shaded area in Figure 18 is the range where VOUT varies in the operating temperature range when the output voltage temperature coefficient is 100 ppm/C. (Refer to *5 of Table 7 for how to calculate the temperature change [mV/C] of the output voltage.) VOUT [V] +0.30 mV/C *1 VOUT(E) -0.30 mV/C -40 25 85 Ta [C] *1. VOUT(E) is the value of the output voltage measured at 25C. Figure 18 Example of Output Voltage Temperature Characteristics (When VOUT = 3.0 V Typ.) Seiko Instruments Inc. 17 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. Detector block 2. 1 Detection voltage (-VDET) The detection voltage (-VDET) is a voltage when the detector output voltage (VDOUT) switches to low. This detection voltage varies slightly depending on products even having the same specification. The range between the minimum (-VDET) value and the maximum (-VDET) value due to variation is called the range of detection voltage (refer to Figure 19). e.g. In a product with -VDET = 3.0 V, the detection voltage is a value in the range of 2.97 V (-VDET) 3.03 V. This means that some products have 2.97 V for -VDET and some have 3.03 V. VOUT Detection voltage (-VDET) max. Range of detection voltage (-VDET) min. VDOUT Remark This is the case when the regulator output voltage (VOUT) is monitored by the detector. Figure 19 2. 2 Detection Voltage (-VDET) Release voltage (+VDET) The release voltage (+VDET) is a voltage when the detector output voltage (VDOUT) switches to high. This release voltage varies slightly depending on products even having the same specification. The range between the minimum (+VDET) value and the maximum (+VDET) value due to variation is called the range of release voltage (refer to Figure 20). e.g. In a product with -VDET = 3.0 V and hysteresis width of 5%, the release voltage is a value in the range of 3.074 V (+VDET) 3.227 V. This means that some products have 3.074 V for +VDET and some have 3.227 V. VOUT Release voltage (+VDET) max. (+VDET) min. Range of release voltage VDOUT Delay time Remark This is the case when the regulator output voltage (VOUT) is monitored by the detector. Figure 20 18 Release Voltage (+VDET) Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. 3 Hysteresis width (VHYS) The hysteresis width is the difference between the detection voltage and the release voltage. Setting the hysteresis width prevents malfunction caused by noise on the input voltage. The hysteresis width is internally fixed and varies depending on the product type (refer to Table 2). 2. 4 Delay time (tD) The delay time (tD) is a period from the input voltage flowing to the detector block has exceeded the release voltage (+VDET), until the detector output voltage (VDOUT) inverts. The internal delay type products (S-1702Axx, Bxx, Cxx, Dxx, Exx, Fxx, Gxx, Hxx, Jxx, Kxx) have delay time which is internally fixed. In external delay type products (S-1702Lxx, Mxx, Nxx, Pxx), the delay time (tD) can be changed by controlling the capacitance value of the capacitor (CD) connected between the CD (RESX) and VSS pins. For how to set the delay time (tD), refer to "3. 2 Delay circuit" in "3. Detector block" in " Operation". V VOUT When tD = 30 ms +VDET When tD = 90 s VDOUT t tD tD Remark This is the case when the regulator output voltage (VOUT) is monitored by the detector. Figure 21 2. 5 Through-type current This is the current that flows instantaneously when the voltage detector detects and releases a voltage. A large through-type current flows in CMOS output products (S-1702xBx, xCx, xEx, xFx, xHx, xJx). A small through-type current flows in Nch open drain products (S-1702xAx, xDx, xGx). Seiko Instruments Inc. 19 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. 6 Oscillation In applications where a resistor is connected to the input side (Figure 22), the through-type current which is generated when the detector output voltage (VDOUT) goes from low to high (release) causes a voltage drop equal to Through-type current x Input resistance across the resistor. When the input voltage drops below the detection voltage as a result, the detector output voltage (VDOUT) goes from high to low. In this state, the through-type current stops, its resultant voltage drop disappears, and the detector output voltage (VDOUT) goes from low to high. The through-type current is then generated again, a voltage drop appears, and repeating the process finally induces oscillation. VIN Ra VIN S-1702 VD block VDOUT Rb VSS Figure 22 2. 7 Example of Bad Implementation of Detection Voltage Changer Temperature characteristics of detection voltage The shaded area in Figure 23 is the range where -VDET varies within the operating temperature range when the temperature coefficient of the detection voltage is 100 ppm/C. (Refer to *7 of Table 7 for how to calculate the temperature change [mV/C] of the detection voltage.) -VDET [V] +0.30 mV/C 3.000 -0.30 mV/C -40 Figure 23 2. 8 25 Ta [C] 85 Example of Detection Voltage Temperature Characteristics (When -VDET = 3.0 V Typ.) Temperature characteristics of release voltage The temperature change + VDET - VDET of the release voltage is calculated by the temperature change Ta Ta of the detection voltage as follows: + VDET + VDET - VDET = x Ta - VDET Ta The temperature changes of the release voltage and the detection voltage consequently have the same sign. 2. 9 Temperature characteristics of hysteresis voltage The temperature change of the hysteresis voltage is expressed as + V DET - - V DET and is calculated as follows: Ta V HYS + V DET - V DET - V DET - = x Ta Ta Ta - V DET 20 Seiko Instruments Inc. Ta SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Operation 1. Control of S-1702 Series by using ON / OFF and RESX pins 1. 1 Starting and stopping regulator block The regulator block can be started and stopped according to the combination of the ON / OFF and RESX pins. The regulator block switches off the output transistor between the VIN and VOUT pins and reduces current consumption significantly. The detector block is operating during this period, so only the amount of current consumed by the detector block flows in the S-1702 Series. 1. 2 Regulator output (VOUT) control: discharge shunt function *1 The regulator output (VOUT) can be controlled by combining the ON / OFF and RESX pins. *1 In the product types having a discharge shunt circuit (Axx, Bxx, Cxx, Exx, Fxx, Gxx, Jxx, Lxx, Nxx), this circuit *1 forcibly sets the regulator output (VOUT) the VSS level . In the product types that do not have a discharge shunt circuit*1 (Dxx, Hxx, Kxx, Mxx, Pxx), the regulator output (VOUT) is set at the VSS level by a division resistor of several M between the VOUT and VSS pins. *1. For details of a discharge shunt circuit, refer to "2. 2. 2 Block". 1. 3 Discharge shunt function" in "2. Regulator Detector output voltage (VDOUT) control: forcible assertion function The detector output voltage (VDOUT) is forcibly asserted to the VSS level by combining the ON / OFF and RESX pins. When the forcible assertion function is not being used, the result of detection by the detector (release status: "H", detection status: "L") is output from the VDOUT pin. Seiko Instruments Inc. 21 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 1. 4 Operation of each function according to ON / OFF and RESX pins The following shows the operation of each function according to the combination of the ON / OFF and RESX pin. Table 13 S-1702Axx, Exx ON / OFF Pin RESX Pin "L" "L" "H" "H" "L" "H" "L" "H" Regulator Output (VOUT) Forcibly discharged Forcibly discharged Forcibly discharged Set value Detector Output (VDOUT) VSS potential VSS potential VSS potential "H" or "L" Regulator Output (VOUT) Detector Output (VDOUT) Regulator Block Stops Stops Stops Starts S-1702Bxx, Fxx ON / OFF Pin RESX Pin "L" "L" "H" "H" "L" "H" "L" "H" Regulator Block Stops Stops Starts Starts Forcibly discharged Forcibly discharged Set value Set value VSS potential VSS potential VSS potential "H" or "L" S-1702Cxx, Gxx ON / OFF Pin RESX Pin "L" "L" Stops "L" "H" Stops "H" "H" "L" "H" Stops Starts Regulator Output (VOUT) Regulator Block Forcibly discharged Not forcibly discharged Forcibly discharged Set value Detector Output (VDOUT) VSS potential "H" or "L" VSS potential "H" or "L" S-1702Dxx, Hxx ON / OFF Pin RESX Pin "L" "L" Stops "L" "H" Stops Regulator Output (VOUT) Regulator Block Not forcibly discharged Not forcibly discharged Detector Output (VDOUT) VSS potential "H" or "L" "H" "L" Starts Set value VSS potential "H" "H" Starts Set value "H" or "L" S-1702Jxx, Lxx, Nxx ON / OFF Pin "L" "H" Regulator Output (VOUT) Regulator Block Stops Starts Forcibly discharged Set value Detector Output (VDOUT) VSS potential "H" or "L" S-1702Kxx, Mxx, Pxx ON / OFF Pin 22 Regulator Block "L" Stops "H" Starts Regulator Output (VOUT) Not forcibly discharged Set value Seiko Instruments Inc. Detector Output (VDOUT) "H" or "L" "H" or "L" SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 1. 5 Equivalent circuits of ON / OFF and RESX pins The ON / OFF and RESX pins are internally fixed to any one of three states; pulled-up (via a pull-up resistor), pulled-down (via a pull-down resistor), or neither pulled-up nor pulled-down (no down pull-up / pull-down resistor). For details, refer to "Table 3 Input Types of RESX and ON / OFF Pins". The equivalent circuits are shown below. VIN VIN ON / OFF or RESX VIN ON / OFF or RESX VSS VSS With pull-up resistor Figure 24 Caution VIN VIN VIN VIN VSS VSS ON / OFF or RESX VSS VSS VSS With pull-down resistor Without pull-up / pull-down resistor Equivalent Circuits of ON / OFF and RESX Pins In product without pull-up / pull-down resistor, do not use the ON / OFF and RESX pins in a floating state. Note that applying voltage of 0.3 V to 1.2 V may increase current consumption. Seiko Instruments Inc. 23 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. Regulator block 2. 1 Basic operation The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance divided by feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary to ensure a certain output voltage free of any fluctuations of input voltage and temperature. The regulator output voltage (VOUT) of the S-1702 Series can be selected from a value between 1.5 V and 5.5 V. The block diagram of the regulator block is shown below. Output circuit VIN VIN Output transistor *1 Current supply Error amplifier VOUT Vref Rf + Discharge shunt circuit Vfb Reference voltage circuit VSS VOUT - Rs VSS *1. Parasitic diode Figure 25 2. 2 Block Diagram (Regulator Block) Output circuit The output circuit of the regulator block consists of an output transistor and a discharge shunt circuit. The discharge shunt function is enabled or disabled for the VOUT pin. Refer to "Table 1 Product Types" for details. The equivalent circuits are shown below. VIN VIN *1 *1 VOUT VOUT Vfb Rf Rf Vfb Rs Rs VSS VSS VSS VSS VSS Discharge shunt function: enabled Figure 26 VSS VSS Discharge shunt function: disabled *1. Parasitic diode 24 VOUT VOUT Equivalent Circuits of VOUT Pin Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. 2. 1 Output transistor The S-1702 Series regulator block uses a low on-resistance Pch MOSFET transistor as the output transistor. Caution Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due to inverse current flowing from the VOUT pin through a parasitic diode to the VIN pin. 2. 2. 2 Discharge shunt function The discharge shunt function is enabled in the S-1702Axx, Bxx, Cxx, Exx, Fxx, Gxx, Jxx, Lxx, and Nxx. When the regulator block is stopped, the output transistor is turned off and the discharge shunt circuit is turned on according to the combination of the ON / OFF and the RESX pins. This operation causes the charge in the output capacitor (CL) to be discharged, and forcibly sets the VOUT pin the VSS level. The VOUT pin is set at the VSS level in a shorter time than the S-1702Dxx, Hxx, Kxx, Mxx, and Pxx, because they disable the discharge shunt function. S-1702 Series Output transistor: OFF *1 VIN VOUT VIN Vref - ON / OFF Current flow Rf + Reference voltage circuit Vfb Rs ON / OFF circuit Discharge shunt circuit : ON Logic circuit RESX VOUT CL *1 Output capacitor Reset circuit VSS GND *1. Parasitic diode Figure 27 Discharge Shunt Function Seiko Instruments Inc. 25 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. Detector block 3. 1 Basic operation Figure 28 shows a block diagram of the detector block. SENSE VIN VSENSE VIN Current supply Ra Vref + Delay circuit - VDOUT Output circuit VDOUT Rb N1 Rc CD VSS CD VSS VSS Figure 28 (1) (2) (3) Block Diagram (Detector Block) When the SENSE voltage (VSENSE) is the release voltage (+VDET) or more, the VDOUT pin outputs "H". ((1) in Figure 29) In this case, the transistor (N1) is off and the input voltage to the comparator is (Rb + Rc) * VSENSE . Ra + Rb + Rc Although the SENSE voltage (VSENSE) drops to the release voltage (+VDET) or less, the VDOUT pin outputs "H" when the SENSE voltage (VSENSE) is the detection voltage (-VDET) or more. If the SENSE voltage (VSENSE) is the detection voltage (-VDET) or less (refer to point A in Figure 29), the VDOUT pin outputs "L" ((2) in Figure 29). The transistor (N1) is turned on and the input voltage to the comparator is Rb * VSENSE . Ra + Rb If the VIN input voltage (VIN) further drops to the lowest operating voltage of the S-1702 Series, the VDOUT pin is sets in high impedance. If the VDOUT pin is pulled up to the regulator output voltage (VOUT), the VDOUT pin outputs VOUT ("H") ((3) in Figure 29). (4) If the VIN input voltage (VIN) rises to the lowest operating voltage or more, the VDOUT pin outputs "L". Although the SENSE voltage (VSENSE) excceds the detection voltage (-VDET), it is the release voltage (+VDET) or less, the VDOUT pin outputs "L" ((4) in Figure 29). (5) If the SENSE voltage (VSENSE) rises to the release voltage (+VDET) or more (see point B in Figure 29), the VDOUT pin outputs "H". The VDOUT pin outputs "H" after it is delayed for tD by the delay circuit ((5) in Figure 29). In the S-1702 Series, the detection voltage (VDOUT) can be set within the range of 1.3 V to 5.2 V (operating voltage range: VIN = 0.8 V to 6.5 V). 26 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series (2) (1) (3) (4) (5) VDD B Hysteresis width (VHYS) VSENSE (VIN) Release voltage (+VDET) A Detection voltage (-VDET) *1 Lowest operating voltage VSS VDOUT VSS *1. tD When the SENSE pin is connected to the VIN pin. Figure 29 3. 1. 1 Operation Regulator output voltage (VOUT) detection types (S-1702Axx, Bxx, Cxx, Dxx, Lxx, Mxx) Each detector block of S-1702Axx, Bxx, Cxx, Dxx, Lxx, and Mxx detects the regulator output voltage (VOUT). VOUT VIN VIN Current supply Ra Vref + Delay circuit - VDOUT Output circuit VDOUT Rb N1 Rc CD *1 VSS CD VSS VSS *1. S-1702Lxx and S-1702Mxx only Figure 30 Block Diagram (Regulator Output Voltage (VOUT) Detection Type) Caution If the input voltage or load current changes transiently, undershoot or overshoot occurs in the regulator output voltage (VOUT). In the product types that the regulator output voltage is detected by the detector, if the output voltage reaches the detection voltage or less due to undershoot, the detector operates so that a reset signal may be output. To prevent this, set the value of the capacitor so that the value of undershoot is the minimum, or set the voltage range in which the difference of the output voltage and the detection voltage is undershoot or more. Seiko Instruments Inc. 27 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. 1. 2 Input voltage (VIN) detection types (S-1702Exx, Fxx, Gxx, Hxx, Nxx, Pxx) Each detector block of S-1702Exx, Fxx, Gxx, Hxx, Nxx, and Pxx detects the input voltage (VIN). VIN VIN Current supply Ra Vref + Delay circuit - VDOUT Output circuit VDOUT Rb N1 Rc CD *1 VSS CD VSS VSS *1. S-1702Nxx and S-1702Pxx only Figure 31 3. 1. 3 Block Diagram (Input Voltage (VIN) Detection Type) SENSE voltage (VSENSE) detection types (S-1702Jxx, Kxx) Each detector block of S-1702Jxx and Kxx detects the SENSE voltage (VSENSE). VSENSE SENSE VIN VIN Current supply Ra Vref + Delay circuit - VDOUT Output circuit VDOUT Rb N1 Rc VSS VSS Figure 32 Block Diagram (SENSE Voltage (VSENSE) Detection Type) Caution Use the SENSE pin as an input pin when detecting the external power supply voltage. If applying an input voltage (VIN) while a potential is being applied to the SENSE pin, an error occurs in the release voltage of the detector. Apply a voltage to the SENSE pin after applying the input voltage (VIN). 28 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. 2 Delay circuit 3. 2. 1 Internal delay types (S-1702Axx, Bxx, Cxx, Dxx, Exx, Fxx, Gxx, Hxx, Jxx, Kxx) In the internal delay types, when VSENSE is turned on, the delay circuit makes a certain delay, after the point when VSENSE has reached the release voltage (+VDET), and sets the VDOUT pin to output an output signal (refer to point B in Figure 29). The delay circuit does not make delay when VSENSE is the detection voltage (-VDET) or less (refer to point A in Figure 29). The delay time (tD) is fixed in the internal circuit of internal delay types. 3. 2. 2 External delay types (S-1702Lxx, Mxx, Nxx, Pxx) In the external delay types, the delay time of the detection signal can be set by connecting a capacitor (CD) between the CD and VSS pins. The delay time (tD) is determined according to the built-in constant current, approx. 100 nA (typ.), and the time constant of the external capacitor (CD), and can be calculated by the following equation. tD [ms] = Delay constant x CD [nF] The delay constant (Ta = +25C) is as follows. Delay constant: 5.3 (min.), 6.3 (typ.), 7.3 (max.) Figure 33 shows the equivalent circuit of the CD pin (external delay type). VIN VIN CD CD VSS Figure 33 VSS VSS Equivalent Circuit of CD Pin (External Delay Type) Caution 1. Design the board so that a current will not flow into or flow out from the CD (RESX) pin, because this pin's impedance is high. (Otherwise that may provide incorrect delay time.) 2. There is no limit for the capacitance of the external capacitor (CD) as long as the leakage current of the capacitor can be ignored against the built-in constant current value. Leakage current causes deviation in delay time. When the leakage current is the built-in constant current or more, the IC does not release. Seiko Instruments Inc. 29 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. 3 Output Circuit Either Nch open drain output, CMOS output (VOUT drive), or CMOS output (VIN drive) is used for the VDOUT pin. For details, refer to "Table 2 Output Types of VDOUT Pin". The equivalent circuits are shown below. VOUT VIN *1 VDOUT VDOUT VDOUT VDOUT VSS VSS *1. VDOUT VDOUT VSS VSS Nch open drain output CMOS output (VOUT drive) Parasitic diode Figure 34 30 *1 Equivalent Circuits of VDOUT Pin Seiko Instruments Inc. VSS VSS CMOS output (VIN drive) SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 4. Relation of temperature coefficients of detector and regulator blocks The S-1702 Series has a detector and a regulator in it, and each reference voltage circuit has the same structure so that both temperature coefficients of detector detection voltage and regulator output interlock. 4. 1 Positive temperature coefficient of regulator output If the temperature coefficient of regulator output is positive, so is that of detector detection voltage (Figure 35). -VDET [V] Temperature gradient of detector Temperature gradient of regulator -40 25 85 Ta [C] Figure 35 4. 2 Relation of Temperature Coefficients of Detector and Regulator (When They Are Positive) Negative temperature coefficient of regulator output If the temperature coefficient of regulator output is negative, so is that of detector detection voltage (Figure 36). Temperature gradient of detector -VDET [V] Temperature gradient of regulator -40 25 85 Ta [C] Figure 36 Relation of Temperature Coefficients of Detector and Regulator (When They Are Negative) Seiko Instruments Inc. 31 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Precautions * Wiring patterns for the VIN, VOUT and GND pins should be designed so that the impedance is low. When mounting an output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing the input between the VIN and VSS pins (CIN), the distance from the capacitors to these pins should be as short as possible. * Note that the output voltage may increase when a series regulator is used at low load current (1.0 mA or less). * Generally a series regulator may cause oscillation depending on the selection of external parts. The following conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. Input capacitor (CIN): Output capacitor (CL): Equivalent series resistance (ESR): 1.0 F or more 1.0 F or more 10 or less * The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or an input capacitor is not connected. * The application conditions for the input voltage, output voltage, and load current should not exceed the package power dissipation. * Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. * In determining the output current, attention should be paid to the output current value specified in Table 7 of " Electrical Characteristics" and footnote *8 of the table. * 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. 32 Seiko Instruments Inc. SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Characteristics (Typical Data) 1. Entire circuit Current consumption during operation*1 vs. Input voltage (Ta = +25C) VOUT = 3.1 V 12 12 10 10 8 8 6 ISS [A] ISS [A] VOUT = 1.5 V Ta = 85C Ta = 25C Ta = -40C 4 2 6 4 Ta = 85C Ta = 25C Ta = -40C 2 0 0 0 1 2 3 4 VIN [V] 5 6 7 0 1 2 3 4 VIN [V] 5 6 7 VOUT = 5.5 V 12 ISS [A] 10 8 6 4 Ta = 85C Ta = 25C Ta = -40C 2 0 0 *1. 1 2 3 4 VIN [V] 5 6 7 Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins Seiko Instruments Inc. 33 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. Regulator block 2. 1 Output voltage vs. Output current (when load current increases) (Ta = +25C) VOUT = 1.5 V VOUT = 3.1 V VOUT [V] 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 VIN = 3.4 V VIN = 4.0 V VIN = 5.0 V VIN = 6.5 V 0 50 100 150 200 250 300 350 400 450 IOUT [mA] VOUT = 5.5 V Remark In determining the output current, attention should be paid to the followings. (1) The minimum output current value and footnote *8 in Table 7 of " Electrical Characteristics". (2) Power dissipation of package 6 VOUT [V] 5 VIN = 5.8 V VIN = 6.0 V VIN = 6.5 V 4 3 2 1 0 2. 2 0 50 100 150 200 250 300 350 400 450 IOUT [mA] Output voltage vs. Input voltage (Ta = +25C) VOUT = 1.5 V VOUT = 3.1 V 1.6 1.4 VOUT [V] VOUT [V] 1.5 IOUT = -1 mA IOUT = -30 mA IOUT = -100 mA 1.3 1.2 1.1 1.0 1.0 1.5 2.0 2.5 VIN [V] 3.0 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 3.5 VOUT [V] VOUT = 5.5 V 5.6 5.5 5.4 5.3 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 IOUT = -1 mA IOUT = -30 mA IOUT = -100 mA 4.5 34 5.0 5.5 VIN [V] 6.0 6.5 Seiko Instruments Inc. IOUT = -1 mA IOUT = -30 mA IOUT = -100 mA 2.5 3.0 3.4 4.0 VIN [V] 4.5 5.0 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. 3 Dropout voltage vs. Output current VOUT = 3.1 V 0.5 0.30 0.4 0.25 0.3 0.2 Ta = 85C Ta = 25C Ta = -40C 0.1 0 0 25 50 75 100 IOUT [mA] 125 Vdrop [V] Vdrop [V] VOUT = 1.5 V 0.20 0.15 0.10 Ta = 85C Ta = 25C Ta = -40C 0.05 0 150 0 25 50 75 100 IOUT [mA] 125 150 VOUT = 5.5 V 0.25 Vdrop [V] 0.20 0.15 0.10 Ta = 85C Ta = 25C Ta = -40C 0.05 0 0 2. 4 25 50 75 100 IOUT [mA] 150 125 Output voltage vs. Ambient temperature 1.50 1.45 1.40 1.35 1.30 1.25 1.20 1.15 1.10 VOUT = 3.1 V VOUT [V] VOUT [V] VOUT = 1.5 V -40 -25 0 25 Ta [C] 50 3.30 3.25 3.20 3.15 3.10 3.05 3.00 2.95 2.90 75 85 -40 -25 0 25 Ta [C] 50 75 85 VOUT [V] VOUT = 5.5 V 5.70 5.65 5.60 5.55 5.50 5.45 5.40 5.35 5.30 -40 -25 0 25 Ta [C] 50 75 85 Seiko Instruments Inc. 35 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 2. 5 Current consumption during operation at regulator block*1 vs. Input voltage VOUT = 3.1 V 10 10 8 8 ISS1 [A] ISS1 [A] VOUT = 1.5 V 6 4 Ta = 85C Ta = 25C Ta = -40C 2 0 0 2 1 6 4 Ta = 85C Ta = 25C Ta = -40C 2 0 5 3 4 VIN [V] 6 7 0 1 2 3 4 VIN [V] 5 6 7 VOUT = 5.5 V 10 ISS1 [A] 8 6 4 Ta = 85C Ta = 25C Ta = -40C 2 0 0 *1. 2. 6 2 1 3 4 VIN [V] 5 6 7 Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins Ripple rejection ratio (Ta = +25C) VOUT = 3.1 V, VIN = 4.1 V, CL = 1.0 F 100 Ripple Rejection [dB] Ripple Rejection [dB] VOUT = 1.5 V, VIN = 2.5 V, CL = 1.0 F 80 60 40 IOUT = 1 mA IOUT = 30 mA IOUT = 150 mA 20 0 10 100 1k 10k Frequency [Hz] 100k 100 80 60 40 0 1M Ripple Rejection [dB] VOUT = 5.5 V, VIN = 6.0 V, CL = 1.0 F 100 80 60 40 IOUT = 1 mA IOUT = 30 mA IOUT = 150 mA 20 0 10 36 100 1k 10k Frequency [Hz] 100k IOUT = 1 mA IOUT = 30 mA IOUT = 150 mA 20 1M Seiko Instruments Inc. 10 100 1k 10k Frequency [Hz] 100k 1M SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Detector block 3. 1 Detection voltage vs. Ambient temperature -VDET = 2.75 V 1.50 1.45 1.40 1.35 1.30 1.25 1.20 1.15 1.10 Detection Voltage [V] Detection Voltage [V] -VDET = 1.3 V +VDET -VDET -40 -25 0 25 Ta [C] 50 3.0 2.9 +VDET 2.8 -VDET 2.7 2.6 2.5 2.4 75 85 -40 -25 0 25 Ta [C] 50 75 85 Detection Voltage [V] -VDET = 5.2 V 3. 2 5.5 5.4 +VDET 5.3 5.2 5.1 5.0 -VDET -40 -25 0 25 Ta [C] 50 75 85 Hysteresis width vs. Ambient temperature -VDET = 2.75 V -VDET = 1.3 V 5 4 3 2 1 0 6 S-1702xAx, xBx, xCx Hysteresis [%] Hysteresis [%] 6 S-1702xDx, xEx, xFx S-1702xGx, xHx, xJx -40 -25 5 4 3 2 1 0 0 25 Ta [C] 50 75 85 S-1702xAx, xBx, xCx S-1702xDx, xEx, xFx S-1702xGx, xHx, xJx -40 -25 0 25 Ta [C] 50 75 85 -VDET = 5.2 V 6 Hysteresis [%] 3. 5 4 3 2 1 0 S-1702xAx, xBx, xCx S-1702xDx, xEx, xFx S-1702xGx, xHx, xJx -40 -25 0 25 Ta [C] 50 75 85 Seiko Instruments Inc. 37 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series 3. 3 Current consumption during operation at detector block*1 vs. Input voltage 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -VDET = 2.75 V ISS2 [A] ISS2 [A] -VDET = 1.3 V Ta = 85C Ta = 25C Ta = -40C 0 1 2 5 3 4 VIN [V] 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 6 6.5 Ta = 85C Ta = 25C Ta = -40C 0 2 1 5 3 4 VIN [V] 6 6.5 ISS2 [A] -VDET = 5.2 V 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Ta = 85C Ta = 25C Ta = -40C 0 *1. 3. 4 1 2 5 3 4 VIN [V] 6 6.5 Excluding current flowing in pull-up and pull-down resistors connected to the ON / OFF or RESX pins Detector output voltage vs. Nch transistor characteristics (ID vs. VDS characteristics) 3. 5 Detector output voltage vs. Pch transistor characteristics (ID vs. VDS characteristics) (Ta = +25C) 30 30 VIN = 5.0 V 20 VIN = 4.0 V 15 VIN = 3.0 V 10 VIN = 2.0 V 5 0 1 2 3 VIN = 4.0 V 20 15 VIN = 3.0 V 10 VIN = 2.0 V 5 VIN = 1.3 V 0 VIN = 5.0 V 25 ID [mA] 25 ID [mA] (Ta = +25C) VIN = 1.5 V 0 4 5 6 0 2 1 VDS [V] 3. 6 5 6 Nch open drain output 6 0.6 5 0.5 4 VDOUT [V] VDOUT [V] 4 Detector output voltage vs. Input voltage CMOS output Ta = 85C Ta = 25C Ta = -40C 3 2 1 0.4 0.3 Ta = 85C Ta = 25C Ta = -40C 0.2 0.1 0 0 0 38 3 VDS [V] 0.2 0.4 0.6 0.8 VIN [V] 1.0 1.2 1.4 Seiko Instruments Inc. 0 0.2 0.4 0.6 0.8 VIN [V] 1.0 1.2 1.4 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series Reference Data Input transient response characteristics (Ta = +25C) VIN VOUT -100 -50 0 50 100 150 200 250 300 350 t [s] VIN VOUT -100 -50 0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 VIN [V] 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 2.95 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 150 100 50 0 -50 -100 -150 -200 IOUT [mA] 1.60 1.58 1.56 1.54 1.52 1.50 1.48 1.46 1.44 VOUT [V] IOUT = 30 mA, tr = tf = 5.0 s, CL = 1.0 F, CIN = 1.0 F VOUT = 3.1 V, VIN = 4.1 V 5.1 V 50 100 150 200 250 300 350 t [s] Load transient response characteristics (Ta = +25C) VOUT -100 -50 0 50 100 150 200 250 300 350 t [s] 150 100 50 0 -50 -100 -150 -200 VOUT [V] IOUT 150 100 50 0 -50 -100 -150 -200 IOUT [mA] 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 VIN = 4.0 V, CL = 1.0 F, CIN = 1.0 F VOUT = 3.1 V, IOUT = 50 mA 100 mA IOUT [mA] VOUT [V] VIN = 2.5 V, CL = 1.0 F, CIN = 1.0 F VOUT = 1.5 V, IOUT = 50 mA 100 mA 3.30 3.25 3.20 3.15 3.10 3.05 3.00 2.95 IOUT VOUT -100 -50 0 50 100 150 200 250 300 350 t [s] VIN = 6.0 V, CL = 1.0 F, CIN = 1.0 F VOUT = 5.5 V, IOUT = 50 mA 100 mA VOUT [V] 2. IOUT = 30 mA, tr = tf = 5.0 s, CL = 1.0 F, CIN = 1.0 F VOUT = 1.5 V, VIN = 2.5 V 3.5 V VIN [V] VOUT [V] 1. 6.40 6.20 6.00 5.80 5.60 5.40 5.20 5.00 IOUT VOUT -100 -50 0 50 100 150 200 250 300 350 t [s] Seiko Instruments Inc. 39 SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION Rev.2.1_00 S-1702 Series ON/OFF pin transient response characteristics (Ta = +25C) VIN = 4.0 V, CL = 1.0 F, CIN = 1.0 F, IOUT = 100 mA VOUT = 3.1 V, VON / OFF = 0 V 4.0 V 3.0 10.0 6.0 4.0 2.0 8.0 4.0 3.0 2.0 1.0 0 -1.0 1.0 VIN 0 -1.0 VOUT -100 0 100 200 300 t [s] 400 500 VOUT [V] 5.0 VON / OFF [V] VOUT [V] VIN = 2.5 V, CL = 1.0 F, CIN = 1.0 F, IOUT = 100 mA VOUT = 1.5 V, VON / OFF = 0 V 2.5 V 6.0 2.0 -2.0 0 -3.0 -2.0 -100 VOUT -100 0 100 200 300 t [s] 400 500 VON / OFF [V] VOUT [V] 40 VIN 8.0 6.0 4.0 2.0 0 -2.0 -4.0 -6.0 -8.0 0 -2.0 VOUT VIN = 6.0 V, CL = 1.0 F, CIN = 1.0 F, IOUT = 100 mA VOUT = 5.5 V, VON / OFF = 0 V 6.5 V 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0 -2.0 2.0 VIN 4.0 Seiko Instruments Inc. -4.0 0 100 200 300 t [s] 400 500 -6.0 VON / OFF [V] 3. 1.570.03 6 1 5 4 2 3 +0.05 0.08 -0.02 0.5 0.480.02 0.20.05 No. PG006-A-P-SD-2.0 TITLE SNT-6A-A-PKG Dimensions No. PG006-A-P-SD-2.0 SCALE UNIT mm Seiko Instruments Inc. +0.1 o1.5 -0 4.00.1 2.00.05 0.250.05 +0.1 1.850.05 5 o0.5 -0 4.00.1 0.650.05 3 2 1 4 5 6 Feed direction No. PG006-A-C-SD-1.0 TITLE SNT-6A-A-Carrier Tape PG006-A-C-SD-1.0 No. SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.00.3 Enlarged drawing in the central part o130.2 (60) (60) No. PG006-A-R-SD-1.0 TITLE SNT-6A-A-Reel No. PG006-A-R-SD-1.0 SCALE UNIT QTY. mm Seiko Instruments Inc. 5,000 0.52 1.36 2 0.52 0.2 0.3 1. 2. 1 (0.25 mm min. / 0.30 mm typ.) (1.30 mm ~ 1.40 mm) 0.03 mm SNT 1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.). 2. Do not widen the land pattern to the center of the package ( 1.30 mm ~ 1.40 mm ). Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package. 2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm or less from the land pattern surface. 3. Match the mask aperture size and aperture position with the land pattern. 4. Refer to "SNT Package User's Guide" for details. 1. 1. (0.25 mm min. / 0.30 mm typ.) 2. 2. (1.30 mm ~ 1.40 mm) 1. 2. () 0.03 mm 3. 4. "SNT" No. PG006-A-L-SD-4.0 TITLE SNT-6A-A-Land Recommendation PG006-A-L-SD-4.0 No. SCALE UNIT mm Seiko Instruments Inc. www.sii-ic.com * * The information described herein is subject to change without notice. * When the products described herein are regulated products subject to the Wassenaar Arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. * Use of the information described herein for other purposes and/or reproduction or copying without the express permission of Seiko Instruments Inc. is strictly prohibited. * The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, vehicle equipment, in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment, without prior written permission of Seiko Instruments Inc. * * The products described herein are not designed to be radiation-proof. 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. Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. The user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.