AS3676 Lighting Management Unit
Flexible lighting management unit with charge pump, DC-DC, 13 current sinks, ALS, DLS, audio sync and LDO
Features
- 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
Benefits
- 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 |
|---|---|
| - [LV] | 10 |
| CP [Max. I (mA)] | 300 |
| DC-DC [Max. I (mA)] | Controller |
| Max. Vled [V] | Controller |
| Features [LDOs (#)] | 1 |
| - [Auto ALS] | Yes |
| - [DLS] | Yes |
| - [RGB Pattern] | Yes |
| - [Dimming] | Yes |
| - [Auto-In] | Yes |
| - [LED Test] | Yes |
| Flash [Support] | Yes |
| - [Max. I (mA)] | 300 |
| 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.
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 |
|---|---|---|---|---|
| AS3676_AN000114_1-00.pdf | Application Note | Tablet applications | 1-00 | English |
| AS3676-77_AN000119_1-00.pdf | Application Note | 9 LED series configuration | 1-00 | English |
| AS34xx_AS36xx_MobileBacklight_AN000107_1-00.pdf | Application Note | Selection Guide | 1-00 | English |
| AS3676_BD000273_1-00.png | Block Diagram | AS3676 Block Diagram | 1-00 | English |
| AS3676_DS000158_1-00.pdf | Datasheet | Document version 1v1-4 | 1-00 | English |
| AS3676_UG000190_1-00.pdf | User Guide | Demo board | 1-00 | English |
