AAT1231 High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications

The AAT1231 is a total solution controller for RGB LED fashion lighting. A simplified control scheme greatly reduces design complexity and accelerates time to market. The AAT1231 contains a high efficiency tri-mode charge pump DC/DC converter with 1X, 1.5X and 2X modes for color LED applications. Current source outputs drive two individual RGB LEDs for color displays, fashion and mood lighting. With a single-wire S2Cwire interface, an RGB LED module is easily controlled to display four distinct lighting mood effects. Low external parts count (two 1μF flying capacitors and two small bypass capacitors) and high conversion efficiency make the AAT1231 ideally suited for small battery- powered portable applications. The AAT1231 has a thermal management system to protect the device in the event of an output short circuit condition. Built-in soft-start circuitry prevents excessive inrush current during start-up. A low current shutdown feature disconnects the load from the input source and reduces quiescent current to less than 1μA.

技术特性

2.7V to 5.5V Input Voltage Range
Compatible with Common Anode RGB LEDs
Four S2Cwire Controlled Lighting Moods
0~60mA Programmable Current Source
Low Noise Constant Frequency Operation
No Inductors
Small Application Circuit
Regulated Output Current
ntegrated LED Control Switches
Automatic Soft-Start
Less than 1μA Shutdown Current

订购信息 Ordering Information

AAT1231

应用领域 APPLICATION

• Digital Still Cameras (DSCs)
Mobile Handsets
MP3 Players
PDAs and Notebook PCs
White LED Drivers

AAT1231 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
AAT1231 数据资料DataSheet下载:pdf	Rev.V2	2 页