AAT3104 Low Cost 1x/2x Four-Channel Charge Pump WLED Driver

The AAT3104 is a step-up single channel LED driver with an input voltage range of 2.7V to 5.5V. The wide input voltage range, small solution size, advanced dimming features and high efficiency is suitable for LED backlight solutions for single cell Li-ion based equipment. A precision, high voltage current sink maintains the maximum LED current set by an external resistor from 10 to 31mA. The high switching frequency supports ultra small, low cost filtering components. Two dimming controls are available; 32 dimming steps using the S2Cwire™ interface, and filtered PWM control. The frequency range of the PWM dimming extends up to 100 kHz eliminating audible noise and suitable for CABC (Content Adaptive Brightness Control) applications. The device includes over-temperature protection and programmable over-voltage protection and recovers automatically when the faults are removed. The AAT3104 is available in a 10-pin wafer-level chip scale package (WLCSP) and is rated over the -40°C to +85°C temperature range.

技术特性

Drives up to 4 LEDs at up to 31mA each
Automatic Switching Between 1x and 2x Modes
1MHz Switching Frequency
Linear LED Output Current Control
Single-wire, S2Cwire Interface
AAT3104-1: 16-step
AAT3104-2: 32-step
±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

订购信息 Ordering Information

AAT3104

应用领域 APPLICATION

Cordless Phone Handsets
Digital Cameras
Mobile Phone Handsets
MP3 and PMP Players

AAT3104 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT3104 数据资料DataSheet下载:pdf	Rev.V2	2 页