AS3661 Datasheet PDF | austria microsystems

austria microsystems AS3661

The AS3661 is a 9-channel LED driver designed to produce lighting effects for mobile devices. The device is equipped with an internal program memory, which allows operation without processor control. The AS3661 maintains excellent efficiency over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements.

Part No.	AS3661
Datasheet	AS3661 Download
Manufacturer	austria microsystems
Description	Programmable 9-channel LED Driver
Buy	Stock & Price

GENERAL DESCRIPTION

A highefficiency charge pump enables LED driving over full LiIon battery voltage range. AS3661 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typ). The AS3661 has an I2C-compatible control interface with four pin selectable addresses. Also, the device has a flexible General Purpose Output (GPO), which can be used as a digital control pin for other devices. INT pin can be used to notify processor when a lighting sequence has ended (interrupt - function). Also, the device has a trigger input interface, which allows synchronization between multiple devices.The device requires only four small and low-cost ceramic capacitors. The AS3661 is available in a tiny WL-CSP-25 (2.285x2.285mm) 0.4mm pitch package. 2 Key

FEATURES

Adaptive charge pump with 1x and 1.5x gain provides up to 95% LED drive efficiency Built-in LED test Figure 1. AS3661 LED Driver Block Diagram ca ni !" # $ % !$ "" ! !"...