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AS3689 Lighting Management Unit

Flexible lighting management, charge-pump, DC-DC step-up, current sink, ADC, LDO

 
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The AS3689 is a highly-integrated CMOS Power and Lighting Management Unit to supply power to LCD and camera modules in mobile telephones, and other 1-cell Li+ or 3-cell NiMH powered devices. The device incorporates one low-power, lowdropout regulator (LDO), one Step Up DC/DC Converter for white backlight LEDs, one high-power Charge Pump for camera flash LEDs, support for up to 11 current sinks, a two wire serial interface, and control logic all onto a single device.

 

Key Features

  • High-Efficiency Step Up DC/DC Converter
  • High-Efficiency High-Power Charge Pump
  • Supports up to 15 Current Sinks
  • PWM generation and LED pattern generator 

Key Benefits

  • Up to 25V/50mA for white LEDs
  • CP Output Current up to 400mA
  • 3 high voltage current sinks
  • Autonomous logarithmic up/down dimming 

Product Facts

# of current sinks [HV] 3
- [LV] 12
Max current (mA) [CP] 400
- [DC-DC] controller*
Max Vled [V] controller*
Features [ LDOs (#)] 1
- [ Auto ALS]
- [ DLS]
- [ RGB Pattern]
- [ Dimming]
- [ Auto-In]
- [LED test]
Flash [Support]
- [max I (mA)] 150
Package WL-CSP36 (3x3)-0.5

Additional Information

Applications
  • Mobile Phones
  • Portable DVD / TV Player
  • Portable Learning Toys
  • Portable Navigation Devices
  • Portable Medical Consumer Devices