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RT9167 Dataheets PDF



Part Number RT9167
Manufacturers Richtek
Logo Richtek
Description 300mA/500mA LDO Regulator
Datasheet RT9167 DatasheetRT9167 Datasheet (PDF)

RT9167/A Low-Noise, Fixed Output Voltage,300mA/500mA LDO Regulator General Description The RT9167/A is a 300mA/500mA low dropout and low noise micropower regulator suitable for portable applications. The output voltages range from 1.5V to 5V in 100mV increments and 2% accuracy. The RT9167/A is designed for use with very low ESR capacitors. The output remains stable even with 1μF ceramic output capacitor. The RT9167/A uses an internal P-MOSFET as the pass device, which does not cause extra GND cu.

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RT9167/A Low-Noise, Fixed Output Voltage,300mA/500mA LDO Regulator General Description The RT9167/A is a 300mA/500mA low dropout and low noise micropower regulator suitable for portable applications. The output voltages range from 1.5V to 5V in 100mV increments and 2% accuracy. The RT9167/A is designed for use with very low ESR capacitors. The output remains stable even with 1μF ceramic output capacitor. The RT9167/A uses an internal P-MOSFET as the pass device, which does not cause extra GND current in heavy load and dropout conditions. The shutdown mode of nearly zero operation current makes the IC suitable for batterypowered devices. Other features include a reference bypass pin to improve low noise performance, current limiting, and over temperature protection. Features z z z z z z z z z z Stable with Low-ESR Output Capacitor Low Dropout Voltage (350mV @ 300mA) Low Operation Current −80μA Typical Shutdown Function Low Noise Output Low Temperature Coefficient Current and Thermal Limiting Custom Voltage Available SOT-23-5 and SOP-8 Packages RoHS Compliant and 100% Lead (Pb)-Free Applications z z Ordering Information RT9167/APackage Type B : SOT-23-5 BR : SOT-23-5 (R-Type) S : SOP-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 2H : 2.85V 500mA Output Current 300mA Output Current Note : Richtek products are : ` z z Cellular Telephones Laptop, Notebook, and Palmtop Computers Battery-powered Equipment Hand-held Equipment Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Pin Configurations (TOP VIEW) VOUT 5 BP 4 BP 5 EN 4 2 3 2 3 VIN GND EN VOUT GND VIN SOT-23-5 SOT-23-5 (R-Type) RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. EN VIN VOUT BP 8 2 3 4 7 6 5 GND GND GND GND ` SOP-8 DS9167/A-29 April 2011 www.richtek.com 1 RT9167/A Typical Application Circuit RT9167/A VIN CIN 1µF IN GND EN BP OUT COUT 1µF VOUT + + Chip Enable CBP 10nF Functional Pin Description Pin Name VIN GND EN BP VOUT Pin Function Power Input Voltage Ground Chip Enable (Active High) Reference Noise Bypass Output Voltage Function Block Diagram EN VREF BP + Error Amplifier Shutdown and Logic Control VIN MOS Driver VOUT Current-Limit and Thermal Protection R1 R2 GND www.richtek.com 2 DS9167/A-29 April 2011 RT9167/A Absolute Maximum Ratings z z z z z z Input Voltage ---------------------------------------------------------------------------------------------------------- 8V Power Dissipation, PD @ TA = 25°C SOT-23-5 --------------------------------------------------------------------------------------------------------------- 0.4W SOP-8 ------------------------------------------------------------------------------------------------------------------ 0.625W Package Thermal Resistance (Note1) SOT-23-5, θJA --------------------------------------------------------------------------------------------------------- 250°C/W SOT-23-5, θJC --------------------------------------------------------------------------------------------------------- 130°C/W SOP-8, θJA ------------------------------------------------------------------------------------------------------------ 160°C/W SOP-8, θJC ------------------------------------------------------------------------------------------------------------ 60°C/W Operating Junction Temperature Range ------------------------------------------------------------------------- −40°C to 125°C Storage Temperature Range --------------------------------------------------------------------------------------- −65°C to 150°C Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260°C Electrical Characteristics (VIN = 5.0V, CIN = 1μF, COUT = 1μF, TA = 25°C, unless otherwise specified) Parameter Input Voltage Range Output Voltage Accuracy Maximum Output Current Current Limit RT9167 RT9167A RT9167 RT9167A RT9167/A Quiescent Current Symbol VIN ΔVOUT Test Conditions Min 2.9 Typ ------700 80 90 90 1.1 55 350 600 ------0.01 155 Max 7 7 2 ----150 150 150 5 100 450 750 6 30 Unit V % mA IL = 50mA IL = 1mA 2.7 -2 300 500 IMAX ILIM RLOAD = 1Ω No Load IOUT = 300mA IOUT = 500mA IOUT = 1mA VDROP IOUT = 50mA IOUT = 300mA IOUT = 500mA ΔVLINE V IN= (VOUT+0.15) to 7V, IOUT =1mA IOUT = 0mA to 300mA IOUT = 0mA to 500mA V IN= 3V to 5.5V VIN = 3V to 5.5V 400 500 ----------1.6 --- mA RT9167/A IG RT9167A RT9167/A μA Dropout Voltage (VOUT(Normal) = 3.0V Version) Line Regulation (2) RT9167/A RT9167/A RT9167A mV mV/V mV RT9167/A Load Regulation RT9167A EN Input High Threshold EN Input Low Threshold EN Bias Current Shutdown Supply Current Thermal Shutdown Temperature ΔVLOAD VIH VIL ISD 35 -0.4 100 1 -V V nA μA °C IGSD TSD VOUT = 0V --- To be continued DS9167/A-29 April 2011 .


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