LM36274 Description
The LM36274 is an integrated four-channel WLED driver and LCD bias supply. The ultra-pact size, high efficiency, high level of integration, and programmability allow the LM36274 to address a variety of applications without the need for hardware changes while minimizing the overall solution area. The backlight boost provides the power to bias four parallel LED strings with up to 29-V total output voltage.
LM36274 Key Features
- 1 Drives up to Four Parallel White LED Strings (29-V Maximum VOUT)
- 11-Bit Exponential and Linear Dimming Control
- PWM and I2C Brightness Control
- Backlight Operation With 4.7-µH to 15-µH Inductor
- Backlight and LCD Bias Efficiency up to 92%
- Programmable LCD Bias Voltages (±4 V to ±6.5 V
- 0.2% Matched LED Current From 60 µA to 30 mA
- 1% Accurate LED Current From 60 µA to 30 mA
- 2.7-V to 5-V Input Voltage Range
LM36274 Applications
- LCD Panels With up to 24 LEDs