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