LM3432B Overview
The LM3432/LM3432B are 6-channel high voltage current regulators which provide a simple solution for LED backlight applications. These devices incorporate six individual current regulator channels to give accurate driving current for each LED string. The string-to-string tolerance is kept within ±2.0%.
LM3432B Key Features
- 2 Dynamic Headroom Control (DHC) Output to Maximize Efficiency when used in Conjunction with Texas Instruments Semicondu
- Current Sinking Adjustable up to 40mA in Each String
- Fast Current Switching Slew Rate, tr = 60ns Typical
- Wide Dimming Ratio, up to 4000:1 with fDIM = 500Hz
- High LED Driving Voltage up to 80V
- ±2.0% Current Matching Between Strings
- Accepts Both Digital and Analog Dimming Control
- LED Open/Short Fault Indication (For LM3432B, no open fault indication)
- Over-Temperature Indication
- Internal Thermal Shutdown with Hysteresis
