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LM3631 Complete LCD Backlight and Bias Power
LM3631
SNVS834 – AUGUST 2014
1 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% • 11-Bit Linear or Exponential Dimming with up to
17-Bit Output Resolution • External PWM Input for CABC Backlight
Operation • LCD Bias Efficiency 85% • Programmable Positive LCD bias, 4-V to 6-V,
100-mA Maximum Output Current • Programmable Negative LCD bias, –4-V to –6-V,
80-mA Ma...