LM36923H
Features
- 1 1% Matched Current Sinks Across Process, Voltage, Temperature
- 3% Current-Sink Accuracy Across Process, Voltage, Temperature
- 11-Bit Dimming Resolution
- Up to 90% Solution Efficiency
- Drives from One to Three Parallel LED Strings at up to 38 V at 25 m A per String
- PWM Dimming Input
- I2C Programmable
- Selectable 500-k Hz and 1-MHz Switching
Frequency With Optional
- 12% shift
- Auto Switch Frequency Mode (250 k Hz, 500 k Hz,
1 MHz)
- Four Configurable Overvoltage Protection
Thresholds (17 V, 24 V, 31 V, 38 V)
- Four Configurable Overcurrent Protection
Thresholds (750 m A, 1000 m A, 1250 m A, 1500 m A)
- Thermal Shutdown Protection
- Externally Selectable I2C Address Options via ASEL Input
2 Applications
- Power Source for Smart Phone and Tablet Backlighting
- LCD Panels With up to 24 LEDs
3 Description
The LM36923H is an ultra-pact, highly efficient, three-string white-LED driver designed for LCD display backlighting. The device can power up to 12 series LEDs at up to 25 m A...
