White backlight LED drivers for medium to large LCD panels (SWREG type)

● Description

BD9202EFS is the LED driver IC which loads the step-up DCDC controller and the constant electric current driver of 8ch. As for the constant electric current driver, PWM modulated light of 10bit gradation (1024stages) is possible with the register setting from 4 line serial interfaces. Because it can adjust brightness with every channel, back light is controlled in every area according to the light and shade of the picture, rise of contrast ratio is actualized.

● Features

1)8ch constant electric current driver built-in

・ Largest drive electric current 150mA/CH *2

・10bit gradation (1024 stages) modulated light is possible by register setting

・To input the standard CLK of PWM from outside is possible (BCT_SYNC_IN terminal)

・Because it is high output resisting pressure (60V), the multi-stage connection of LED is possible

・Detecting abnormal mode with LED opening detection

2)Step-up DCDC controller built-in

3) UVLO function

4) 4 line serial interface

5) HTSSOP-A44 Package

● Applications

For the equipment of loading LCD indicator of TV, monitor and note PC and the like