Low-Noise EL Drivers suit backlighting applications.
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Press Release Summary:
Designed for panels up to 4 in.² or greater, MIC4830 and MIC4832 are, respectively, 180 and 220 Vpp low-noise electroluminescent lamp (EL) driver ICs that consume typical supply current of 45 µA. They utilize bipolar, CMOS, DMOS (BCD) technology and integrate boost converter. Also included, H-bridge driver eliminates audible noise by creating smooth ac waveform across EL panel. Flexibility is offered via externally adjustable lamp and boost converter frequencies.
Original Press Release:
Micrel Launches New Family of Highly Efficient Low Noise Electroluminescent Lamp Drivers for Backlighting Applications
SAN JOSE, Calif., Sept. 19 -- Micrel Inc., (NASDAQ:MCRL), an industry leader in analog, high bandwidth communications and Ethernet IC solutions, today launched the MIC4830 and MIC4832, a new series of 180Vpp and 220Vpp low noise electroluminescent lamp (EL) drivers designed to drive panels of up to 4 square inches or greater. Applications include mobile phones, PDAs, pagers, calculators, multimedia players, and remote controls. The ICs are available in volume with pricing starting at $0.85 for 1K quantities.
"The MIC4830 and MIC4832 raise the efficiency standard for EL drivers," noted Ralf Muenster, Micrel's marketing director for power products. "By improving efficiency, designers can achieve longer battery life in today's most demanding and feature-rich consumer applications, while at the same time eliminating the annoying buzz frequently associated with EL panels."
High efficiency for the MIC4830 and MIC4832 is achieved, in part, by consuming a typical supply current of just 45 micro Amps. Utilizing Micrel's advanced Bipolar, CMOS, DMOS (BCD) technology, the ICs integrate a high voltage boost converter and a new H-bridge driver for driving a large EL lamp. In contrast to previous designs that often produced an annoying audible buzz, the new H-Bridge design eliminates audible noise in both products by creating a smoother AC waveform across the EL panel. Operating from an input voltage range of 1.8V to 5.5V, the MIC4830 and MIC4832 offer greater flexibility via externally adjustable lamp and boost converter frequencies. The MIC4830/32 are available in RoHS compliant MLF(R) 3mm x 3mm and MSOP-8 Pb-free package options. All options feature a -40-degC to +85-degC junction temperature range.
About Micrel, Inc.
Micrel Inc., is a leading global manufacturer of IC solutions for the worldwide analog, Ethernet and high bandwidth markets. The Company's products include advanced mixed-signal, analog and power semiconductors; high performance communication, clock management, Ethernet switch and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe and Asia. In addition, the Company maintains an extensive network of distributors and reps worldwide. Web: http://www.micrel.com/.
Note: MLF is a registered trademark of Amkor Technology.
CONTACT: Julieanne DiBene, Marketing Communications of Micrel Inc., +1-408-474-1276, Julie.DiBene@Micrel.com
