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
| Name | Type | Description | Version | Language |
|---|---|---|---|---|
| AS3689_BD000359_1-00.png | Block Diagram | AS3689 Block Diagram | 1-00 | English |
| AS3689_DS000253_1-00.pdf | Datasheet | Document version 1.0.2 | 1-00 | English |
