AS3688 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 12 current sinks
- PWM generation and LED pattern generator
Benefits
- Up to 25V/50mA for white LEDs
- CP output current up to 400mA / 900mA pulsed
- 2 high voltage current sinks
- Autonomous logarithmic up/down dimming
Product parameters
| # of Current Sinks (HV) | 2 |
|---|---|
| # of Current Sinks (LV) | 7 |
| CP (max. l) [mA] | 900 |
| DC-DC (max. l) [mA] | Controller |
| Max. Vled [V] | Controller |
| # of LDOs | 2 |
| Auto ALS | |
| DLS | |
| RGB Pattern | Yes |
| Dimming | Yes |
| Auto-In | |
| LED Test | Yes |
| Flash Support | Yes |
| Flash (max. l) [(mA] | 900 |
| Package | QFN-32 (5x5)-0.5 |
General description
The AS3688 is a highly-integrated CMOS power and lighting management unit to supply power to LCD and camera modules in mobile phones. 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 1.1.1 | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS3688 Block Diagram | English |
