Datasheet Summary
3/29/2012
4-Channel LED Backlight Driver
REV: 00
General Description
The LD7889A is a 4-channel linear current controller which bines with a boost switching controller. It’s an ideal solution for driving high power LED backlights. The LD7889A can deliver high accuracy of constant current to 4 LED strings with 4 internal MOSFET. For each LED string, the current is adjustable to drive up to 240mA. The LD7889A incorporates 4 individual current regulator channels to give accurate driving current for each LED string. The string-to-string tolerance is set within 2%. PWM input pin controls LED brightness from PWM control signals. The other Features include LED short and open...