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AS3668 Smartlight Driver

4-channel breathlight controller


  • Highly accurate 4-channel high side 25.5mA current sources
  • Audio controlled lighting with internal digital filters


  • Easy generation of complex differentiating lighting effects
  • Smooth ramps and accurate colors
  • Smart audio controlled lighting effects

Product parameters

# of Current Sinks 4
Charge Pump [mA] 150
User Memory [kbit]
Performance Features [RGB Pattern] Yes
- [Dimming] Log / linear
- [Ext. PWM] Yes
- [Ext. Trigger] Yes
- [Audio-In] Yes
- [LED Test] Yes
Package WL-CSP12 (1.25x1.68)-0.4

General Description

The AS3668 is a 4-channel LED driver designed to produce lighting effects for portable devices. A highly efficient charge pump enables LED driving over full Li-ion battery voltage range. The device is equipped with an internal program memory, which allows control of LED patterns even without processor control.

This product suits for the following applications:

  • Smart watches
  • Mobile phones
  • Remote controls
  • Battery-powered portable devices


Name Type Description Language
AS3668_AD000109_1-00.pdf Application Data Carrier PCB Module English Software LED driver documentation English Software Eval SW 1v10 English

Technical Documents

Name Type Description Version Language
AS34xx_AS36xx_MobileBacklight_AN000107_1-00.pdf Application Note Selection Guide 1-00 English
AS3668_BD000278_1-00.png Block Diagram AS3668 Block Diagram 1-00 English
AS3668_DS000196_1-00.pdf Datasheet Document version 1.13 1-00 English
AS3668_RC000107_1-00.pdf RoHS Certificate RoHS Certificate AS3668 1-00 English
AS3668_UG000138_1-00.pdf User Guide Evaluation board 1v1 1-00 English

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