AS3689 Lighting Management Unit
Flexible lighting management, charge pump, DC-DC step-up, current sink, ADC, LDO
Features
- High-efficiency DC-DC step-up converter
- High-efficiency high-power charge pump
- Supports up to 15 current sinks
- PWM generation and LED pattern generator
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 parameters
# of Current Sinks [HV] | 3 |
---|---|
- [LV] | 12 |
CP [Max. I (mA)] | 400 |
DC-DC [Max. I (mA)] | Controller |
Max. Vled [V] | Controller |
Features [LDOs (#)] | 1 |
- [Auto ALS] | |
- [DLS] | |
- [RGB Pattern] | Yes |
- [Dimming] | Yes |
- [Auto-In] | |
- [LED Test] | Yes |
Flash [Support] | Yes |
- [Max. I (mA)] | 150 |
Package | WL-CSP36 (3x3)-0.5 |

General Description
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, low-dropout regulator (LDO), one DC-DC step-up 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.

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 1.0.2 | English |
Other Information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS3689 Block Diagram | English |