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ADM8843 - Four White LED Backlight Driver

Description

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.

Features

  • Drives 4 LEDs from a 2.6 V to 5.5 V (Li-Ion) input supply 1×/1.5×/2× fractional charge pump to maximize power efficiency 0.3% typical LED current matching Up to 88% power efficiency over Li-Ion range Powers main and sub display LEDs with individual shutdown Package footprint only 9 mm2 (3 mm × 3 mm) Package height only 0.55 mm Low power shutdown mode Shutdown function Soft start limiting in-rush current.

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Datasheet preview – ADM8843

Datasheet Details

Part number ADM8843
Manufacturer Analog Devices
File Size 278.76 KB
Description Four White LED Backlight Driver
Datasheet download datasheet ADM8843 Datasheet
Additional preview pages of the ADM8843 datasheet.

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Full PDF Text Transcription

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Four White LED Backlight Driver ADM8843 FEATURES Drives 4 LEDs from a 2.6 V to 5.5 V (Li-Ion) input supply 1×/1.5×/2× fractional charge pump to maximize power efficiency 0.3% typical LED current matching Up to 88% power efficiency over Li-Ion range Powers main and sub display LEDs with individual shutdown Package footprint only 9 mm2 (3 mm × 3 mm) Package height only 0.55 mm Low power shutdown mode Shutdown function Soft start limiting in-rush current APPLICATIONS Cellular phones with main and sub displays White LED backlighting Camera flash/strobes and movie light applications Micro TFT color displays DSC PDAs GENERAL DESCRIPTION The ADM8843 uses charge pump technology to provide the power to drive up to four LEDs.
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