(R) RT9193 300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator General Description Features The RT9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9193 performance is optimized for battery-powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9193 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The RT9193 consumes less than 0.01A in shutdown mode and has fast turn-on time less than 50s. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Available in the SC-70-5, SOT-23-5, TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages. z Ultra Low Noise for RF Application z Ultra Fast Response in Line/Load Transient Quick Start-Up (Typically 50us) <0.01 A Standby Current When Shutdown Low Dropout : 220mV @ 300mA Wide Operating Voltage Ranges : 2.5V to 5.5V TTL-Logic-Controlled Shutdown Input Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1 F Output Capacitor Required for Stability High Power Supply Rejection Ratio Custom Voltage Available RoHS Compliant and 100% Lead (Pb)-Free z z z z z z z z z z z z Applications z Ordering Information z RT9193- z Package Type U5 : SC-70-5 B : SOT-23-5 J5 : TSOT-23-5 QW : WDFN-6L 2x2 (W-Type) F : MSOP-8 Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Output Voltage 15 : 1.5V 16 : 1.6V : 49 : 4.9V 50 : 5.0V 1H : 1.85V 2H : 2.85V 4G : 4.75V (1.5V to 5V with 0.1V step is available) Note : z z z CDMA/GSM Cellular Handsets Battery-Powered Equipment Laptop, Palmtops, Notebook Computers Hand-Held Instruments PCMCIA Cards Portable Information Appliances Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Typical Application Circuit RT9193 VIN CIN 1F/X7R Chip Enable VIN VOUT GND EN VOUT COUT 1F/X7R BP CBP 22nF Richtek products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9193 Pin Configurations (TOP VIEW) VOUT BP 5 4 2 EN GND VIN 3 VIN GND EN 1 6 2 3 5 7 4 BP NC VOUT WDFN-6L 2x2 NC VIN NC VOUT 8 2 7 3 6 4 5 NC EN BP GND MSOP-8 SC-70-5/SOT-23-5/TSOT-23-5 Functional Pin Description Pin Name Pin Function EN Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100k resistor connected to GND when the control signal is floating. BP Reference Noise Bypass. GND Ground. VOUT Output Voltage. VIN Power Input Voltage. Function Block Diagram EN Shutdown and Logic Control Quick Start BP VIN VREF + - MOSFET Driver Error Amplifier VOUT Current-Limit and Thermal Protection GND Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 2 is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 Absolute Maximum Ratings z z z z z z z (Note 1) Supply Input Voltage ---------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25C SC-70-5 -------------------------------------------------------------------------------------------------------------------TSOT-23-5/SOT-23-5 ---------------------------------------------------------------------------------------------------WDFN-6L 2x2 ------------------------------------------------------------------------------------------------------------MSOP-8 ------------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) SOT-70-5, JA ------------------------------------------------------------------------------------------------------------TSOT-23-5/SOT-23-5, JA ---------------------------------------------------------------------------------------------TSOT-23-5/SOT-23-5, JC ---------------------------------------------------------------------------------------------WDFN-6L 2x2, JA ------------------------------------------------------------------------------------------------------WDFN-6L 2x2, JC ------------------------------------------------------------------------------------------------------MSOP-8 JA --------------------------------------------------------------------------------------------------------------MSOP-8 JC -------------------------------------------------------------------------------------------------------------Junction Temperature --------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------Storage Temperature Range ------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Mode) --------------------------------------------------------------------------------------------MM (Machine Mode) ---------------------------------------------------------------------------------------------------- Recommended Operating Conditions z z z z 6V 300mW 400mW 606mW 625mW 333C/W 250C/W 25C/W 165C/W 20C/W 160C/W 55C/W 150C 260C -65C to 150C 2kV 200V (Note 4) Supply Input Voltage ---------------------------------------------------------------------------------------------------EN Input Voltage --------------------------------------------------------------------------------------------------------Junction Temperature Range -----------------------------------------------------------------------------------------Ambient Temperature Range ------------------------------------------------------------------------------------------ 2.5V to 5.5V 0V to 5.5V -40C to 125C -40C to 85C Electrical Characteristics (VIN = VOUT + 1V, CIN = COUT = 1F, CBP = 22nF, TA = 25 C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Output Voltage Accuracy VOUT IOUT = 1mA -2 -- 2 % Current Limit ILIM RLOAD = 1 360 400 -- mA Quiescent Current IQ VEN -- 90 130 A 170 200 Dropout Voltage (Note 5) VDROP 1.2V, IOUT = 0mA IOUT = 200mA, VOUT > 2.8V mV IOUT = 300mA, VOUT > 2.8V -- 220 300 Line Regulation VLINE VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA -- -- 0.3 % Load Regulation VLOAD 1mA < IOUT < 300mA -- -- 0.6 % Standby Current ISTBY VEN = GND, Shutdown -- 0.01 1 A EN Input Bias Current IIBSD VEN = GND or VIN -- 0 100 nA Logic-Low VIL VIN = 3V to 5.5V, Shutdown -- -- 0.4 Logic-High VIH VIN = 3V to 5.5V, Start-Up 1.2 -- -- EN Threshold Voltage Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 V is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9193 Parameter Symbol Output Noise Voltage eNO Power Supply f = 100Hz Rejection Rate f = 10kHz PSRR Test Conditions 10Hz to 100kHz, IOU T = 200mA COUT = 1F COUT = 1F, IOUT = 10mA Min Typ Max Unit -- 100 -- VRMS -- -70 -- -- -50 -- dB Thermal Shutdown Temperature TSD -- 165 -- C Thermal Shutdown Temperature TSD -- 30 -- C Note 1. Stresses beyond those listed "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect device reliability. Note 2. JA is measured at TA = 25C on a low effective thermal conductivity single-layer test board per JEDEC 51-3. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Note 5. The dropout voltage is defined as VIN - VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV. Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 Typical Operating Characteristics Quiescent Current vs. Temperature Output Voltage vs. Temperature 1.8 1.6 1.5 1.4 RT9193-15xU5 VIN = 3.3V CIN = COUT = 1F X7R 90 Quiescent Current (A) RT9193-15xU5 VIN = 3.3V CIN = COUT = 1F X7R 1.7 Output Voltage (V) 95 85 80 75 70 1.3 65 60 1.2 -50 -25 0 25 50 75 100 -50 125 -25 0 25 20 TJ = 125C 0 200 PSRR (dB) Dropout Voltage (mV) 125 VIN = 4V to 5V CIN = COUT = 1F, X7R RT9193-33xB CIN = COUT = 1F TJ = 25C 150 TJ = -40C 100 -20 -40 ILoad = 100mA -60 50 ILoad = 10mA -80 0 0 0.05 0.1 0.15 0.2 0.25 10 0.01 0.3 100 0.1 1K 1 10K 10 100K 100 Load Current (A) Frequency (Hz) (kHz) EN Pin Shutdown Threshold vs. Temperature EN Pin Shutdown Response 1.50 RT9193-15xU5 VIN = 3.3V CIN = COUT = 1F X7R EN Pin Voltage (V) 1.75 1.25 Output Voltage (V) EN Pin Shutdown Threshold (V)1 100 PSRR Dropout Voltage vs. Load Current 250 75 Temperature (C) Temperature (C) 300 50 1.00 0.75 10 VIN = 5V CIN = COUT = 1F 1M 1000 RT9193-28xU5 No Load 5 0 2 1 0 0.50 -50 -25 0 25 50 75 100 125 Time (500s/Div) Temperature (C) Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9193 Load Transient Response ILOAD = 1mA to 60mA 50 Output Voltage Deviation (mV) 0 20 0 -20 200 0 50 0 -50 Line Transient Response Line Transient Response VIN = 4V to 5V COUT = 1F RT9193-25xB ILOAD = 1mA 5 4 10 0 -10 6 VIN = 4V to 5V COUT = 1F RT9193-25xB ILOAD = 100mA 5 4 10 0 -10 Time (50s/Div) Time (100s/Div) Noise Noise RT9193-30xB ILOAD = 50mA VIN = 4.5V CIN = COUT = 1F, X7R 200 100 100 Noise (V) 200 0 -100 -200 RT9193-15xU5 ILOAD = 50mA 0 -100 -200 f = 10Hz to 100kHz Time (10ms/Div) Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 6 ILOAD = 1mA to 250mA Time (500s/Div) VIN = 4.5V CIN = COUT = 1F, X7R Noise (V) VIN = 5V, VOUT = 2.8V 400 CIN = COUT = 1F Time (500s/Div) Input Voltage Deviation (V) 6 Load Current (mA) VIN = 5V, VOUT = 2.8V 100 CIN = COUT = 1F Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage Deviation (V) Output Voltage Deviation (mV) Load Current (mA) Load Transient Response f = 10Hz to 100kHz Time (10ms/Div) is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 Output Voltage (V) EN Pin Voltage (V) Start Up 10 VIN = 5V CIN = COUT = 1F RT9193-28xU5 No Load 5 0 2 1 0 Time (10s/Div) Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9193 Applications Information Like any low dropout regulator, the external capacitors used with the RT9193 must be carefully selected for regulator stability and performance. Using a capacitor whose value is >1F on the RT9193 input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-transient response. The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The RT9193 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 1F with ESR is >1m on the RT9193 output ensures stability. The RT9193 still works well with output capacitor of other types due to the wide stable ESR range. Figure 1 shows the curves of allowable ESR range as a function of load current for various output capacitor values. Output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT pin of the RT9193 and returned to a clean analog ground. Region of Stable COUT ESR vs. Load Current 100 Connecting a 22nF between the BP pin and GND pin significantly reduces noise on the regulator output, it is critical that the capacitor connection between the BP pin and GND pin be direct and PCB traces should be as short as possible. There is a relationship between the bypass capacitor value and the LDO regulator turn on time. DC leakage on this pin can affect the LDO regulator output noise and voltage regulation performance. Enable Function The RT9193 features an LDO regulator enable/disable function. To assure the LDO regulator will switch on, the EN turn on control level must be greater than 1.2 volts. The LDO regulator will go into the shutdown mode when the voltage on the EN pin falls below 0.4 volts. For to protecting the system, the RT9193 have a quick-discharge function. If the enable function is not needed in a specific application, it may be tied to VIN to keep the LDO regulator in a continuously on state. Thermal Considerations Thermal protection limits power dissipation in RT9193. When the operation junction temperature exceeds 165C, the OTP circuit starts the thermal shutdown function turn the pass element off. The pass element turn on again after the junction temperature cools by 30C. For continue operation, do not exceed absolute maximum operation junction temperature 125C. The power dissipation definition in device is : Instable 10 COUT ESR () Bypass Capacitor and Low Noise PD = (VIN - VOUT) x IOUT + VIN x IQ 1 The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ambient. The maximum power dissipation can be calculated by following formula : Stable 0.1 0.01 RT9193-15xU5 CIN = COUT = 1F, X7R PD(MAX) = ( TJ(MAX) - TA ) /JA 0.001 0 50 100 150 200 250 Load Current (mA) Figure 1 Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 8 300 Where T J(MAX) is the maximum operation junction temperature 125C, TA is the ambient temperature and the JA is the junction to ambient thermal resistance. is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 For recommended operating conditions specification of RT9193, where T J(MAX) is the maximum junction temperature of the die (125C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance (JA is layout dependent) for TSOT-23-5/ SOT-23-5 package is 250C/W, SC-70-5 package is 333C/W, WDFN-6L 2x2 package is 165C/W and MSOP8 package is 160C/W on standard JEDEC 51-3 thermal test board. The maximum power dissipation at TA = 25C can be calculated by following formula : PD(MAX) = (125C - 25C) / 333 = 300mW for SC-70-5 PD(MAX) = (125C - 25C) / 250 = 400mW for TSOT-23-5/SOT-23-5 PD(MAX) = (125C - 25C) / 165 = 606mW for WDFN-6L 2x2 PD(MAX) = (125C -25C) / 160 = 625mW for MSOP-8 The maximum power dissipation depends on operating ambient temperature for fixed T J(MAX) and thermal resistance JA. For RT9193 packages, the Figure 2 of derating curves allows the designer to see the effect of rising ambient temperature on the maximum power allowed. 700 MSOP-8 WDFN-6L 2x2 Power Dissipation (mW) 600 500 TSOT-23-5/ SOT-23-5 400 SC 70-5 300 200 100 0 0 25 50 75 100 125 Ambient Temperature (C) Figure 2. Derating Curve for Packages Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 9 RT9193 Outline Dimension H D L B C b A A1 e Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.800 1.100 0.031 0.044 A1 0.000 0.100 0.000 0.004 B 1.150 1.350 0.045 0.054 b 0.150 0.400 0.006 0.016 C 1.800 2.450 0.071 0.096 D 1.800 2.250 0.071 0.089 e 0.650 0.026 H 0.080 0.260 0.003 0.010 L 0.210 0.460 0.008 0.018 SC-70-5 Surface Mount Package Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 10 is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 H D L B C b A A1 e Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.700 1.000 0.028 0.039 A1 0.000 0.100 0.000 0.004 B 1.397 1.803 0.055 0.071 b 0.300 0.559 0.012 0.022 C 2.591 3.000 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 TSOT-23-5 Surface Mount Package Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 11 RT9193 H D L B C b A A1 e Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.889 1.295 0.035 0.051 A1 0.000 0.152 0.000 0.006 B 1.397 1.803 0.055 0.071 b 0.356 0.559 0.014 0.022 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 SOT-23-5 Surface Mount Package Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. www.richtek.com 12 is a registered trademark of Richtek Technology Corporation. DS9193-15 January 2012 RT9193 D2 D L E E2 1 e b A A1 SEE DETAIL A 2 1 2 1 A3 DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.200 0.350 0.008 0.014 D 1.950 2.050 0.077 0.081 D2 1.000 1.450 0.039 0.057 E 1.950 2.050 0.077 0.081 E2 0.500 0.850 0.020 0.033 e L 0.650 0.300 0.026 0.400 0.012 0.016 W-Type 6L DFN 2x2 Package Copyright (c) 2012 Richtek Technology Corporation. All rights reserved. DS9193-15 January 2012 is a registered trademark of Richtek Technology Corporation. www.richtek.com 13 RT9193 D L E1 E e A2 A A1 b Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.810 1.100 0.032 0.043 A1 0.000 0.150 0.000 0.006 A2 0.750 0.950 0.030 0.037 b 0.220 0.380 0.009 0.015 D 2.900 3.100 0.114 0.122 e 0.650 0.026 E 4.800 5.000 0.189 0.197 E1 2.900 3.100 0.114 0.122 L 0.400 0.800 0.016 0.031 8-Lead MSOP Plastic Package Richtek Technology Corporation 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries. www.richtek.com 14 DS9193-15 January 2012