General Description

The AAT3236 is a MicroPower low dropout (LDO) 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 (PSRR), extended battery life, and small size are critical.

Features

• 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

— 70dB at 1kHz

— 50dB at 10kHz

• Very Low Self Noise: 45µVrms

• Noise Reduction Bypass Capacitor

• Short-Circuit Protection

• Over-Temperature Protection

• Shutdown Mode for Longer Battery Life

• Low Temperature Coefficient

• Nine Factory-Programmed Output Voltages

• SOT23 5-Pin or SC70JW 8-Pin Package

Applications

• Cellular Phones

• Notebook Computers

• Personal Portable Electronics

• Portable Communication Devices