AS3675 Lighting Management Unit

Flexible lighting management unit with charge pump, DC-DC, 13 current sinks


  • High-efficiency DC-DC step-up converter
  • High-efficiency high-power charge pump
  • 13 fully programmable current sinks (8-bit)
  • PWM generation and LED pattern generator


  • Up to 16V/55mA (or 25V/35mA) for white LEDs
  • Output current up to 300mA/500mA pulsed
  • Low voltage and 3 high voltage current sinks
  • Autonomous logarithmic up/down dimming

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-CSP30 (3x2.5)-0.5

General Description

The AS3675 is a highly-integrated CMOS power and lighting management unit for mobile phones. The AS3675 incorporates one DC-DC step-up converter for white backlight LEDs, one high-power charge pump, one analog-to-digital converter and 13 current sinks. The RGB and white LEDs can be controlled and synchronized by an audio input.

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 1v3 English
Application Note Selection Guide English


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

Other Information

Type Description Language
Block Diagram AS3675 Block Diagram English