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.
Not Recommended for New Designs
ams AG is discontinuing production of this device. Final lifetime buy order must be placed by June 30, 2021. Please contact your local sales representative for further information.
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 |
Notifications
| Type | Description | Language | ||
|---|---|---|---|---|
| EoL Notification | AS1xxx, AS25xx, AS3xxx, AS73211, AS89020, SL900A, TMD4704 (issued 2020-Dec) | English |
Other Information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS3689 Block Diagram | English |
