AAT3195 Four-Channel Charge Pump LED Driver

The AAT3195 is a charge-pump based, current-sink white LED driver capable of driving one to four 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. The AAT3195 charge pump’s 1x mode (bypass mode) has very low resistance allowing LED current regulation to be maintained with input supply voltage approaching the LED forward voltage. The AAT3195 incorporates an internal RSET and is available in a thermally enhanced, Pb-free 2x2.2mm 10-lead SC70JW-10 package.

技术特性

Drives up to 4 LEDs at up to 30mA, each
Automatic Switching Between 1x and 2x Modes
1MHz Switching Frequency
Linear LED Output Current Control
Single-wire, S2Cwire™ Interface
AAT3195-1: 30mA, 32-step
AAT3195-2: 20mA, 32-step
ON/OFF or PWM Interface
AAT3195-3
±10% LED Output Current Accuracy
3% LED Output Current Matching
Low-current Shutdown Mode
Built-in Thermal Protection
Automatic Soft-start
2x2.2mm SC70JW-10 Package

应用领域 APPLICATION

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

订购信息 Ordering Information

AAT3195

AAT3195 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
AAT3195 数据资料DataSheet下载:pdf	Rev.V2	2 页