MIC2843 Datasheet High-Efficiency 6-Channel Linear WLED Driver

Manufacturer: Micrel Semiconductor

Overview: MIC2843 High-Efficiency 6-Channel Linear WLED Driver with Ultra-Fast PWM™ Control.

MIC2843 high-efficiency 6-channel linear wled driver by Micrel Semiconductor - Datasheet Preview

Datasheet Details

Part number	MIC2843
Manufacturer	Micrel Semiconductor
File Size	1.35 MB
Description	High-Efficiency 6-Channel Linear WLED Driver
Download	MIC2843 Download (PDF)

General Description

The MIC2843 is a high-efficiency linear white LED (WLED) driver designed to drive up to six WLEDs, greatly extending battery life for portable display backlighting, keypad backlighting, and camera flash in mobile devices.

The MIC2843 provides the highest possible efficiency as this architecture has no switching losses present in traditional charge pumps or inductive boost circuits.

The MIC2843 provides six linear drivers which maintain constant current for up to six WLEDs.

Key Features

a typical dropout of less than 40mV at 20mA. This allows the WLEDs to be driven directly from the battery eliminating switching noise/losses present with the use of boost circuitry. The six channels are matched better than ±3% typical, ensuring uniform display illumination under all conditions. The brightness is controlled through an Ultra Fast PWM™ interface operating down to less than 1% duty cycle. The MIC2843 is available in the 2mm x 2mm 10-pin Thin ® MLF leadless package with a junction te.

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