LM3532
Description
The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks.
Key Features
- 1 Drives up to 3 Parallel High-Voltage LED Strings at 40 V Each With up to 90% Efficiency
- 0.4% Typical Current Matching Between Strings
- 256 Level Logarithmic and Linear Brightness
- Direct Read Back of Ambient Light Sensor Via
- Programmable Dual Ambient Light Sensor Inputs
- Dual External PWM Inputs for LED Brightness
- Independent Current String Brightness Control
- Programmable LED Current Ramp Rates
- 40-V Overvoltage Protection
- 1-A Typical Current Limit
Applications
- Power Source for White LED Backlit LCD Displays
