描述 Description

Please note: this product is being discontinued and is not recommended for new designs.

The AAT3128 is a total solution controller for RGB LED fashion lighting. A simplified control scheme greatly reduces design complexity and accelerates time to market.

The AAT3128 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 AAT3128 ideally suited for small battery-powered portable applications.

The AAT3128 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.

The AAT3128 is available in a 14-pin TSOPJW package.

Please note: AAT3128 is not recommended for new designs.

特性 Features

? 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
? Integrated LED Control Switches
? Automatic Soft-Start
? Less than 1μA Shutdown Current