Microsemi Introduces Advanced Controller for Lighting Notebook LCD Displays




             -- Maximizes Lamp Life and Efficiency
             -- Controls Electromagnetic Interference
             -- 60:1 Wide-Range Dimming Ratio

IRVINE, Calif., Sept. 14, 2006 (PRIMEZONE) -- Microsemi Corporation (Nasdaq:MSCC) a leading manufacturer of analog and mixed signal integrated circuits, is in high volume shipments of an advanced controller optimized for the inverters that power cold cathode fluorescent lamps used in notebook computer LCD displays.

Designated the LX1692A, the new Microsemi controller is a fifth generation, cost-reduced direct drive design utilizing an advanced full bridge resonant inverter topology. Its 60:1 wide range dimming ratio is ideal for notebook computer applications.

"Our designers draw on their deep expertise in our patented CCFL lighting technology to match controller specifications to the distinct needs we learn from our diverse customer base," said Paul Bibeau, Sr. Vice President and General Manager of Microsemi's Integrated Products Group.

The LX1692A utilizes a resonant full bridge topology that provides near-sinusoidal waveforms over a wide supply voltage range that can maximize the life of CCFL lamps, control EMI emissions and maximize efficiency.

Safety features limit the transformer secondary voltage and protect against fault conditions including open lamps, broken lamps and short-circuit faults.

Dimming can be controlled three ways, by analog, digital, or a combination of both that greatly extends their dimming range.

The LX1692A is designed to accommodate easy design-in, is capable of handling inverter applications from 7 to 22 volts and is compatible with existing transformers. Integrated gate drivers are included for four external MOSFETs and an integrated 4V low dropout regulator greatly simplifies supply voltage requirements.

The LX1692A controller is available in either a 20-pin TSSOP or SOIC package and with either commercial or extended temperature range specifications. Additional technical information is available on the Microsemi web site, www.microsemi.com. Samples can be ordered through this site, or from Microsemi sales representatives and authorized distributors. In 10K lot quantities, the unit price for the LX1692A is $1.50.

Microsemi's resonant strike design provides unsurpassed fluorescent lamp striking power combined with highest operating efficiency. All Microsemi CCFL controller designs are protected by U.S. Patents: 5,615,093; 5,923,129; 593,121; 6,198,234; and other patents pending.

About Microsemi Corporation

Microsemi is a leading designer, manufacturer and marketer of high performance analog and mixed signal integrated circuits and high reliability semiconductors. The company's semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.

Microsemi's products include individual components as well as integrated circuit solutions that enhance customer designs by improving performance and reliability, battery optimization, reducing size or protecting circuits. The principal markets the company serves included implanted medical, defense/aerospace and satellite, notebook computers, monitors and LCD TVs, automotive and mobile connectivity applications. More information may be obtained by contacting the company directly or by visiting its web site at http://www.microsemi.com. LX is a trademark of Microsemi Corporation.

The Microsemi Corporation logo is available at http://www.primezone.com/newsroom/prs/?pkgid=1233

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Investor Inquiries: David R. Sonksen, Microsemi Corporation, Irvine, CA (949) 221-7101.



            

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