AAT3236IJS-30-T1

AAT3236 300mA CMOS High Performance LDO General Description The AAT3236 is a MicroPower™ Low Dropout Linear Regulator designed to deliver a continuous 300mA output load current and is capable of handling short duration current peaks up to 500mA. With a very small footprint SOT23-5 package it is ideally suited for portable applications where low noise, high power supply ripple rejection, extended battery life and small size are critical. The AAT3236 features fast transient response and low output self noise for powering sensitive RF circuitry. Other features include low quiescent current, typically 100µA, and low dropout voltage, typically 300mV at full output load current. The device has internal output short circuit protection and thermal shutdown to prevent damage under extreme conditions. The AAT3236 also features a low-power shutdown mode for longer battery life. A bypass pin is provided to improve PSRR performance by connecting an external capacitor from the AAT3236's reference output to ground. The AAT3236 is available in a space saving SOT23-5 or SC70JW-8 package in 7 factory programmed voltages of 2.5V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, or 3.5V. Features • • • • • • PowerLinear™ • • • • • • • • 500mA Peak Output Current Low Dropout - Typically 300mV at 300mA Guaranteed 300mA Output High accuracy ±1.5% 100µA Quiescent Current High Power Supply Ripple Rejection • 70 dB at 1kHz • 50 dB at 10kHz Very low self noise 45µVrms/rtHz Noise reduction bypass capacitor Short circuit protection Over-Temperature protection Shutdown mode for longer battery life Low temperature coefficient 7 Factory programmed output voltages SOT-23 5-pin or SC70JW 8-pin package Preliminary Information Applications • • • • Cellular Phones Notebook Computers Portable Communication Devices Personal Portable Electronics Typical Application VIN IN VOUT AAT3236 OUT BYP ON/OFF 1µF EN GND 10nF 2.2µF GND GND 3236.2001.11.0.9 1 AAT3236 300mA 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 3236.2001.11.0.9 AAT3236 300mA 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 Resistance (SOT23-5, SC70JW-8) Maximum Power Dissipation1 (SOT23-5, SC70JW-8) 1 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 (VIN=VOUT(NOM)+1V, IOUT=1mA, COUT = 2.2µF, CIN = 1µF, CBYP = 10nF, TA= -40 to 85°C unless otherwise noted. For typical values TA=25°C) Symbol VOUT IOUT VDO ISC IQ ISD ∆VOUT/ VOUT*∆VIN ∆VOUT(line) ∆VOUT(load) VEN(L) VEN(H) IEN PSRR TSD THYS eN TC Description Output Voltage Tolerance Output Current Dropout Voltage2 Short Circuit Current Ground Current Shutdown Current Line Regulation Dynamic Line Regulation Dynamic Load Regulation Enable Threshold Low Enable Threshold High Leakage Current Enable Pin Power Supply Rejection Ratio Over Temp Shutdown Threshold Over Temp Shutdown Hysteresis Output Noise Output Voltage Temp. Coeff. Conditions IOUT = 1mA to 300mA VOUT > 1.2V IOUT = 300mA 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