Driving Three White LEDs Typical Application for ADM8843 White LED Backlight Driver

Driving Three White LEDs Typical Application for ADM8843 White LED Backlight Driver. The ADM8843 uses charge pump technology to provide the power to drive up to four LEDs. The LEDs are used for backlighting a color LCD display that has regulated constant current for uniform brightness intensity. The main display can use up to three LEDs, and the sub display uses one LED. The CTRL1 and CTRL2 digital input control pins control the shutdown operation and the brightness of the main and sub displays