Microchip Technology MIC4826YMM-TR

Description
The MIC4826 is a high output voltage, DC to AC converter designed for driving EL (Electroluminescent) lamps. It operates from an input voltage range of 1.8V to 5.5V, making it suitable for 1-cell Li-ion and 2- or 3-cell alkaline/NiCad/NiMH battery applications. The MIC4826 converts a low voltage DC input to a 160 Vpp AC output signal that drives the EL lamp and generates light.
The MIC4826 is comprised of two stages: a boost stage and an H-bridge, lamp driver, stage. The boost stage steps the input voltage up to 80V. The H-bridge stage then alternately switches the 80V output to each terminal of the EL lamp, thus creating a 160 Vpp AC signal to drive the EL lamp.
The MIC4826 features separate oscillators for the boost and H-bridge stages. External resistors independently set the operating frequency of each stage. This flexibility allows the EL lamp circuit to be optimized for maximum efficiency and brightness.
The MIC4826 uses a single inductor and a minimum number of external components, making it ideal for portable, space-sensitive applications.

Features
Low Input Voltage: 1.8V to 5.5V DC
160 Vpp Regulated AC Output Waveform
Independently Adjustable EL Lamp Frequency
Independently Adjustable Boost Converter Frequency
0.1 μA Shutdown Current

Applications
LCD Panel Backlight
Cellular Phones
PDAs
Pagers
Calculators
Remote Controls
Portable Phones