LM3697 Description
The LM3697 11-bit LED driver provides highperformance backlight dimming for 1, 2, or 3 series 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 LM3697 is a high-efficiency three-string power source for backlight or keypad LEDs in smart-phone...
LM3697 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
- 11-Bit configurable dimming resolution
- PWM input for content adjustable brightness
- Fully configurable LED grouping and control
- Integrated 1-A/40-V MOSFET
- Adaptive boost output to LED voltages
- Selectable 500-kHz and 1-MHz switching
- Four configurable overvoltage protection