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MIC2845A Datasheet High Efficiency 6 Channel Linear WLED Driver

Manufacturer: Micrel Semiconductor

Overview: MIC2845A High Efficiency 6 Channel Linear WLED Driver with DAM™, Ultra Fast PWM™ Control and Dual Low IQ LDOs.

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Datasheet Details

Part number MIC2845A
Manufacturer Micrel Semiconductor
File Size 1.48 MB
Description High Efficiency 6 Channel Linear WLED Driver
Download MIC2845A Download (PDF)

General Description

The MIC2845A is a high efficiency White LED (WLED) driver designed to drive up to six LEDs, greatly extending battery life for portable display backlighting, keypad backlighting, and camera flash in mobile devices.

The MIC2845A provides the highest possible efficiency as this architecture has no switching losses present in traditional charge pumps or inductive boost circuits.

The MIC2845A provides six linear drivers channels which maintain constant current for up to six LEDs.

Key Features

  • a typical dropout of 40mV at 20mA. This allows the LEDs to be driven directly from the battery eliminating switching noise/losses present with the use of boost circuitry. The MIC2845A features Dynamic Average Matching™ (DAM™) which is specifically designed to provide optimum matching across all WLEDs. The six channels are matched better than ±1.5% typical, ensuring uniform display illumination under all conditions. The brightness is controlled through an Ultra Fast PWM™ Control interface operati.

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