ADM8845 Datasheet Charge Pump Driver for LCD White LED Backlights

Manufacturer: Analog Devices

ADM8845 charge pump driver for lcd white led backlights by Analog Devices - Datasheet Preview

Datasheet Details

Part number	ADM8845
Manufacturer	Analog Devices
File Size	341.54 KB
Description	Charge Pump Driver for LCD White LED Backlights
Download	ADM8845 Download (PDF)

General Description

The ADM8845 provides the power required to drive up to six LEDs, using charge pump technology.

The LEDs are used for backlighting a color LCD display, with up to four LEDs in the main display and up to two LEDs in the sub display, with regulated constant current for uniform brightness intensity.

Two digital input control pins, CTRL1 and CTRL2 control the shutdown operation and the brightness of the main and sub displays.

Overview

Preliminary Technical Data.

Key Features

ADM8845 drives 6 LEDs from a 2.6 V to 5.5 V (li-ion) input supply 1x/1.5x/2x Fractional Charge Pump to maximise power efficiency 1% Max LED Current Matching Up to 88% Power Efficiency over Li-ion Range Powers Main and Sub Display LEDs with individual shutdown Package footprint only 9mm2 (3mm x 3mm) Package height only 0.9mm Low power shutdown mode Shutdown Function Soft-start limiting inrush current Charge Pump Driver for LCD White LED Backlights ADM8845.

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