General Description

The AAT3129 is a high efficiency charge pump DC/DC converter with tri-mode load switch (1X) fractional (1.5X) and doubling (2X) conversion for color LED applications. A single current source output provides a regulated current to drive R, G, and B LEDs via three internal switches. With a simple single wire serial bus, the RGB module can be easily controlled to display 4096 colors.

Features

• VIN Range: 2.7V to 5.5V

• Common Anode RGB LED Control

• 4096 Color with Single Wire Digital Control

• 40mA to 180mA Fixed Current Source

• AS2Cwire Digital Brightness Control

• Low Noise Constant Frequency Operation

• Small Application Circuit

• Regulated Output Current

• No Inductors

• 1MHz Switching Frequency

• IQ <1µA in Shutdown

• 12-Pin TSOPJW Package

Applications

• Fashion RGBs

• Mobile Handsets

• MP3 Players

• PDAs

• Portable Devices

• RGB Color LEDs

• RGB Photo Flash

• Smart Phones