Four 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 back-lighting 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 opera-tion and the brightness of the main and sub Displays
To maximize power efficiency, the Charge Pump CAN operate in 1, 1.5, or 2 mode. The Charge Pump automatically switches among 1/1.5/2 modes, based on the input voltage, to maintain sufficient drive for the LED anodes at the highest power efficiency.
Improved brightness matching of the LEDs is achieved by a feedback pin that senses individual LED current with a typical matching accuracy of 0.3%.
Applications Cellular phones with main and sub Displays White LED backlighting Camera Flash strobes and movie light applications Micro TFT color Displays DSC PDAs
By Analog Devices, Inc.
ADM8843 's PackagesADM8843 's pdf datasheet
ADM8843ACPZ-REEL7 LFCSP
ADM8843ACPZ1-R7 LFCSP
ADM8843EB-EVALZ LFCSP




ADM8843 Pinout, Pinouts
ADM8843 pinout,Pin out
This is one package pinout of ADM8843,If you need more pinouts please download ADM8843's pdf datasheet.

ADM8843 Application circuits
ADM8843 circuits
This is one application circuit of ADM8843,If you need more circuits,please download ADM8843's pdf datasheet.


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