AAT3111 SHEETMicroPowerTM Regulated Charge Pump

The AAT3111 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 AAT3111 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 AAT3111 is available in a Pb-free, 2x2mm 10-lead SC70JW-10 package

技术特性

Step-Up Type Voltage Converter
Input Voltage Range:
AAT3111-3.6: 1.8V to 3.6V
AAT3111-3.3: 1.8V to 3.3V
MicroPower Consumption: 20μA
3.6V, 3.3V Regulated ±4% Output
3.6V Output Current
100mA with VIN ≥ 3.0V
20mA with VIN ≥ 2.0V
3.3V Output Current
100mA with VIN ≥ 2.5V
20mA with VIN ≥ 1.8V
High Frequency 750kHz Operation
Shutdown Mode Draws Less Than 1μA
Short-Circuit/Over-Temperature Protection
2kV ESD Rating
SC70JW-8 or SOT23-6 Package

订购信息 Ordering Information

AAT3111

应用领域 APPLICATION

Battery Back-Up Supplies
Digital Cameras
Handheld Electronics
MP3 Players
PDAs

AAT3111 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
AAT3111 数据资料DataSheet下载:pdf	Rev.V2	2 页