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AS3676 Lighting Management Unit

Flexible lighting management unit with charge pump, DC-DC, 13 current sinks, ALS, DLS, audio sync and LDO


  • High-efficiency step-up DC-DC converter
  • High-efficiency high-power charge pump
  • 13 fully programmable current sinks
  • Dynamic luminance scaling (DLS) support
  • Ambient light sensor (ALS) input


  • Programmble up to 26V/50mA for white LEDs
  • Low voltage and high voltage current sinks
  • Improved LCD backlight control by DLS
  • Internal hardware ALS processing

Product parameters

# of Current Sinks [HV] 3
- [LV] 10
CP [Max. I (mA)] 300
DC-DC [Max. I (mA)] Controller
Max. Vled [V] Controller
Features [LDOs (#)] 1
- [Auto ALS] Yes
- [DLS] Yes
- [RGB Pattern] Yes
- [Dimming] Yes
- [Auto-In] Yes
- [LED Test] Yes
Flash [Support] Yes
- [Max. I (mA)] 300
Package WL-CSP-30 (3x2.5)-0.5

General Description

The AS3676 is a highly-integrated CMOS power and lighting management unit for mobile phones. The AS3676 incorporates one DC-DC step-up converter for white backlight LEDs, one high-power charge pump, 13 current sinks, LED in-circuit function test, a charge pump serial interface, and control logic all onto a single device.

This product suits for the following applications:

  • Mobile phones
  • Portable DVD / TV player
  • Portable learning toys
  • Portable navigation devices
  • Portable medical consumer devices


Type Description Language
Software Setup English
Software Eval SW 1v10 English

Technical Documents

Type Description Language
Application Note Tablet applications English
Block Diagram AS3676 Block Diagram English
Datasheet Document version 1v1-4 English
User Guide Demo board English

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