ADM8845 Charge Pump Driver for LCD White LED Backlights

Analog Devices

Description

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

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Datasheet Specifications

Part number: ADM8845
Manufacturer: Analog Devices ↗
File Size: 341.54 KB
Datasheet: ADM8845_AnalogDevices.pdf
Description: Charge Pump Driver for LCD White LED Backlights

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)

Applications

* Mobile phones with Main and Sub Displays White LED Backlighting Camera Flash/Strobes and Movie Light Applications Micro TFT color displays DSC PDA’s FUNCTIONAL BLOCK DIAGRAM C1 C2 VCC ADM8845 Charge Pump 1x/1.5x/2x mode Vout C4 C3 MAIN SUB Osc CTRL1 CTRL2 + - Control Logic Vref FB1 FB2 FB3

ADM8845 Distributors

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ADM8845 Charge Pump Driver for LCD White LED Backlights Analog Devices

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