LM3432 Datasheet PDF

FEATURES

1
●2 Dynamic Headroom Control (DHC) Output to Maximize Efficiency when used in Conjunction with Texas Instruments Semiconductor's LM3430 Boost Controller for LED Backlighting
● 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
● Low profile, Thermally Enhanced WQFN-24 (5x4x0.8mm) and eHTSSOP-28 (9.7x6.4x1.1mm) Packages (The LM3432B is available in the WQFN-24 only)

APPLICATIONS

● LCD Display Backlight

APPLICATIONS

● General Lighting Solutions

DESCRIPTION

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.