Microchip Technology MIC4834YMM

Description
The MIC4834 is a low-noise dual Electroluminescent (EL) Panel driver used in backlighting applications. It converts a low DC voltage to a high DC voltage using a boost converter and then alternates the high DC voltage across the EL panels using an H-bridge. The MIC4834 incorporates internal wave-shaping circuitry specifically designed to reduce audible noise emitted by EL panels. With only one inductor, the MIC4834 can drive two outputs and requires a minimum number of passive components. It features an operating input voltage range of 2.3V to 5.8V, making it suitable for 1-cell Li-ion and 2- or 3-cell alkaline/NiCad/NiMH battery applications.

Features
Drives two EL panels, up to 3 in² each at full brightness
220Vpp regulated AC output waveform
2.3V to 5.8V DC input voltage
Wave-shaping circuit to reduce audible noise
Adjustable boost converter frequency
Single inductor to power both panels
0.1μA typical shutdown current
Package options:
10-pin 3mmx3mm MLF®
10-pin MSOP-10L
-40°C to 125°C junction temperature range

Applications
Mobile phones
MP3/portable media players (PMP)
Clocks/watches
Remote controls
Cordless phones
GPS devices
PDAs