MIC4830: Low Noise 180Vp-p EL Driver0 pages

MIC4830
Low Noise 180VPP EL Driver
General Description
The MIC4830 is a low noise 180VPP electroluminescent lamp (EL) driver. Using advanced Bipolar, CMOS, DMOS (BCD) technology, the MIC4830 integrates a high voltage boost converter and an H-bridge driver for driving a large EL lamp. The MIC4830 can drive large panel displays for mobile phones, multimedia players or automotive electronics where EL panels are used for backlighting.
The MIC4830 offers design flexibility with adjustable lamp and boost converter frequencies, simply by applying external resistors. A new H-Bridge design reduces audible noise by creating smoother AC voltage across the EL panel.
The MIC4830 is offered in MLF® 3mm × 3mm and MSOP-8 Pb-free and RoHS-compliant packaging with a –40°C to 85°C junction temperature range.
Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com.
Features
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1.8V to 5.5V input voltage
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180Vpp output voltage
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Low audible noise EL drive waveform
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Supports EL panel sizes up to 4in2 (25cm2)
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Low 45ìA operating supply current
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Small inductor size with low profile (220ìH)
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Tiny 8-pin 3mm × 3mm MLF® package
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Adjustable boost converter frequency
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Adjustable EL lamp frequency
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Low 10nA shutdown current
Applications
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LCD panel backlight
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Mobile Phones
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PDAs
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Pagers
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Calculators
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Multimedia Players
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Remote controls
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GPS Receivers
Typical Application
Low Noise EL Driver
MLF and MicroLeadFrame are registered trademark of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2009
M9999-070709-C