AAT3215IJS-25-T1

AAT3215 150mA CMOS High Performance LDO General Description The AAT3215 MicroPower™ Low Dropout Linear Regulator is ideally suited for portable applications where low noise, extended battery life and small size are critical. The AAT3215 has been specifically designed for very low output noise performance, fast transient response and high power supply rejection ratio (PSRR), making it ideal for powering sensitive RF circuits. Other features include low quiescent current, typically 95µA, and low dropout voltage which is typically less than 140mV at full output current. The device is output short circuit protected and has a thermal shutdown circuit for additional protection under extreme conditions. The AAT3215 also features a low-power shutdown mode for extended battery life. A reference bypass pin has been provided to improve PSRR performance and output noise, by connecting an external capacitor from the AAT3215's reference output to ground. The AAT3215 is available in a space saving 5-pin SOT-23 or 8-pin SC70-JW package in 8 factory programmed voltages of 2.5V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.3V, or 3.5V. Features • • • • • PowerLinear™ • • • • • • • • • • Low Dropout - 140mV at 150mA Guaranteed 150mA Output High accuracy ±1.5% 95µA Quiescent Current High Power Supply Ripple Rejection • 70 dB at 1kHz • 50 dB at 10kHz Very low self noise 45µVrms/rtHz Fast line and load transient response Short circuit protection Over-Temperature protection Uses Low ESR ceramic capacitors Noise reduction bypass capacitor Shutdown mode for longer battery life Low temperature coefficient 8 Factory programmed output voltages SOT-23 5-pin or SC70-JW 8-pin package Preliminary Information Applications • • • • • Cellular Phones Notebook Computers Portable Communication Devices Personal Portable Electronics Digital Cameras Typical Application VIN IN OUT VOUT AAT3215 ON/OFF 1µF EN GND 10nF 2.2µF BYP GND GND 3215.2002.03.0.91 1 AAT3215 150mA CMOS High Performance LDO Pin Descriptions Pin # SOT23-5 SC70JW-8 Symbol IN GND EN Function Input voltage pin - should be decoupled with 1µF or greater capacitor. Ground connection pin Enable pin - this pin is internally pulled high. When pulled low the PMOS pass transistor turns off and all internal circuitry enters low-power mode, consuming less than 1µA. Bypass capacitor connection - to improve AC ripple rejection, connect a 10nF capacitor to GND. This will also provide a soft start function. Output pin - should be decoupled with 2.2µF capacitor. 1 2 3 5, 6 8 7 4 1 BYP 5 2, 3, 4 OUT Pin Configuration SOT-23-5 (Top View) SC70JW-8 (Top View) IN GND EN 15 2 34 OUT BYP BYP OUT OUT OUT 1 2 8 7 3 4 6 5 GND EN IN IN 1 2 2 3215.2002.03.0.91 AAT3215 150mA CMOS High Performance LDO Absolute Maximum Ratings Symbol VIN IOUT TJ TLEAD (TA=25°C unless otherwise noted) Value 6 PD/(VIN-VO) -40 to 150 300 Description Input Voltage DC Output Current Operating Junction Temperature Range Maximum Soldering Temperature (at leads, 10 sec) Units V mA °C °C Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time. Thermal Information Symbol ΘJA PD Description Maximum Thermal Resistance1 (SOT23-5, SC70JW-8) Maximum Power Dissipation1 (SOT23-5, SC70JW-8) Rating 190 526 Units °C/W mW Note 1: Mounted on a demo board. Recommended Operating Conditions Symbol VIN T Description Input Voltage Ambient Temperature Range Rating (VOUT+0.3) to 5.5 -40 to +85 Units V °C Electrical Characteristics Symbol VOUT IOUT VDO ISC IQ ISD ∆VOUT/VOUT*∆VIN ∆VOUT(line) ∆VOUT(load) VEN(L) VEN(H) IEN PSRR TSD THYS eN TC (VIN=VOUT(NOM)+1V, IOUT=1mA, COUT=2.2µF, CIN=1µf, CBYP=10nF, TA= -40 to 85°C unless otherwise noted. Typical values are TA=25°C) Description Output Voltage Tolerance Output Current Dropout Voltage1 Short Circuit Current Ground Current Shutdown Current Line Regulation Dynamic Line Regulation Dynamic Load Regulation Enable Threshold Low Enable Threshold High Leakage Current on Enable Pin Power Supply Rejection Ratio Conditions IOUT = 1mA to 150mA Min Typ Max TA=25°C -1.5 TA=-40 to 85°C -2.5 150 140 600 95 1.5 2.5 250 150 1 0.07 1 30 0.6 1.5 1 70 50 47 150 10 45 22 Units % % mA mV mA µA µA %/V mV mV V V µA dB °C °C µVrms/rtHz ppm/°C VOUT > 1.2V IOUT = 150mA VOUT < 0.4V VIN = 5V, No load, EN = VIN VIN = 5V, EN = 0V VIN = VOUT + 1 to 5.5V VIN=VOUT+1V to VOUT+2V, IOUT=150mA, TR/TF =2µs IOUT = 1mA to 150mA, TR