AS3822 LED Driver

8 channel white LED controller for LCD backlight

The AS3822 is a 8 channels precision LED controller for use in LCDbacklight panels. Dynamic

power feedback controls the external power supply to guarantee best efficiency. Build in safety

features include thermal shutdown as well as open and short LED detection. The device is

programmable via serial interface.

Key Features



8 Channel LED driver



Output voltage only limited by external transistor



Output current only limited by external transistor



Linear current setting using 10-bit DAC



Current accuracy ±0.5% @ VDAC=250mV