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
CP [Max. I (mA)] 300
DC-DC [Max. I (mA)] Controller
Max. Vled [V] Controller
Features [LDOs (#)] 1
Flash [Support] Yes
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.

Not Recommended for New Designs
ams AG is discontinuing production of this device.

This product suits for the following applications:

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

Technical Documents

Type Description Language
Datasheet Document version 1v1-4 English
Application Note Tablet applications English
Application Note 9 LED series configuration English
Application Note Selection Guide English
User Guide Demo board English


Type Description Language
EoL Notification AS252x, AS36xx, AS37xx_AS3956 (issued 2019-Sep) English

Other Information

Type Description Language
Block Diagram AS3676 Block Diagram English