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SP4438 Datasheet Ultra-quiet Electroluminescent Lamp Driver For Cellular Phone Applications

Manufacturer: Sipex

Overview: ® SP4438 Ultra-Quiet Electroluminescent Lamp Driver For Cellular Phone Applications s Patent Pending Output Waveshaping s Waveshaped Output Optimized For Low Acoustic Noise And Maximum Efficiency s Reduced Supply Current And Standby Current s Up to15cd/m2 For Cell Phone Sized EL Lamps (2 to 3 sq. in.) s Waveshaped Output And Low Frequency Operation Minimize Stress On EL Lamp To Extend Its Lifetime s Uses 820µH, Sub-2mm Coils s Gradual Rising And Falling Edges Minimizes EMI s +2.7V To +3.

Datasheet Details

Part number SP4438
Manufacturer Sipex
File Size 223.68 KB
Description Ultra-Quiet Electroluminescent Lamp Driver For Cellular Phone Applications
Datasheet SP4438_SipexCorporation.pdf

General Description

The SP4438 device is a low noise, high voltage output DC-AC inverter designed to drive electroluminescent lamps to backlight liquid crystal display and keypads used in cellular phones, cordless phones, 2-way radios, and other wireless communication products.

The output waveform of the SP4438 device is ideal for cell phone applications requiring low acoustic noise performance.

One external resistor is used to set the internal oscillator frequency and one inductor is required to generate the high voltage AC output to drive an EL lamp up to 3 square inches in size.

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