General Description

The AAT3193 is a charge-pump based, current-sink white LED driver capable of driving one to three LEDs up to 30mA, each. It automatically switches between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current accuracy and matching.

Features

• Drives up to 3 LEDs at up to 30mA, each

• Automatic Switching Between 1x and 2x Modes

• 0.9MHz Switching Frequency

• Linear LED Output Current Control

▪ Single-wire, S2Cwire Interface

• AAT3193-1: 16-step

• AAT3193-2: 8-step

• AAT3193-3: 4-step

▪ ON/OFF or PWM Interface

• AAT3193-4

• ±10 LED Output Current Accuracy

• ±3 LED Output Current Matching

• Low-Current Shutdown Mode

• Built-in Thermal Protection

• Automatic Soft-Start

• Available in 2x2mm SC70JW-10 Package

Applications

• Entry Level Cordless Phone Handsets

• Entry Level Digital Cameras

• Entry Level Mobile Phone Handsets

• Entry Level MP3 and PMP Players