LM3633 Description
The LM3633 11-bit LED driver provides highperformance backlight dimming for 1, 2, or 3 parallel high-voltage LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency. The LM3633 is a plete power source for backlight, keypad, and indicator LEDs in smartphone...
LM3633 Key Features
- 1 Drives Three Parallel High-Voltage LED Strings for Display and Keypad Lighting
- High-Voltage Strings Capable of up to 40-V Output Voltage and up to 90% Efficiency
- Up to 30-mA per Current Sink (Both Backlight and Indicator)
- 11-Bit High-Voltage LED Dimming
- PWM Input for Content Adjustable Brightness
- Integrated 1-A/40-V MOSFET
- Adaptive Boost Output to LED Voltages
- Six Low-Voltage Current Sinks for Indicator LEDs
- Integrated Charge Pump for Improved Efficiency
- Internal Pattern Generation Engine for Each