AAT3105 Low Cost 1x/2x Four-Channel Charge Pump WLED Driver

The AAT3105 is a charge-pump based, current-source 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 matching. The AAT3105 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. LED brightness is controlled using a universal PWM interface. The AAT3105 is available in a Pb-free, 2x2mm 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
0.85MHz Switching Frequency
Linear LED Output Current Control
Universal PWM Interface
±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

AAT3105

应用领域 APPLICATION

Cell Phones
Digital Still Cameras
MP3 Players
Personal Data Assistants (PDAs)

AAT3105 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
AAT3105 数据资料DataSheet下载:pdf	Rev.V2	2 页