LM3631 Description
The LM3631 is a plete LCD backlight and bias power solution for mobile devices. This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small solution size while still maintaining high performance.
LM3631 Key Features
- 1 Drives up to Two Strings with Maximum of Eight LEDs in Series
- Integrated Backlight Boost with 29-V Maximum Output Voltage
- Two Low-Side Constant-Current LED Drivers with 25-mA Maximum Output Current
- Backlight Efficiency Up to 90%
- External PWM Input for CABC Backlight
- LCD Bias Efficiency > 85%
- Programmable Positive LCD bias, 4-V to 6-V
- Programmable Negative LCD bias, -4-V to -6-V
- Two Positive Programmable LDO Reference
- 4-V to 6-V, 50-mA Maximum Output Current