With PureBLACK(TM) Backlighting, Optimizes Performance, Cuts
                            System Cost

IRVINE, Calif., March 1, 2010 (GLOBE NEWSWIRE) -- Microsemi Corporation
(Nasdaq:MSCC), a leading manufacturer of high performance analog/mixed
signal integrated circuits and high reliability semiconductors, has
expanded its commercial LCD TV market presence with a new
energy-efficient system solution optimized for High Voltage LCD
Integrated Power Supply (HV-LIPS) TV designs.

The Microsemi system-engineered solution combines a power transistor
tailored for large-screen LCD TV designs with the company's latest
high-voltage backlight inverters and CCFL controllers. Designated the
APT15F50KF FREDFET, the new transistor is based on Microsemi's advanced
Power MOS8(TM) technology.

"By combining our new APT15F50K/KF FREDFET with LX6503A(TM)/LX6523A(TM)
CCFL inverter controllers in this comprehensive reference design, we
provide customers with a quick-to-market, optimized, turnkey LCD TV
backlight system solution that brings outstanding performance, lower
device count, and reduced cost to LCD TVs," said Philip Zuk, Marketing
Manager in Microsemi's Power Products Group."

Key APT15F50KF Features


  --  Low trr (<190ns) for high reliability
  --  Fast switching low EMI
  --  Ultra low Crss for improved noise immunity
  --  Low gate charge, Qg
  --  Avalanche energy rated




Microsemi's LX6503A(TM) and LX6523A(TM) high-performance CCFL
controllers feature superior PureBLACK(TM) CCFL image quality and are
optimized for small- to larger-sized LCD TVs and other multi-lamp LCD
display systems. They enable cost-optimized bill of material solutions
for off-power-factor-corrected HV-LIPS inverter applications.

With simple external circuitry, the controllers can drive the
APT15F50K/KF FREDFET in either push-pull, half-bridge, or full-bridge
CCFL inverter configurations. Microsemi has a complete documentation
package for the LCD television backlight controller reference design,
including description, schematics, bill-of-materials, Gerber files, and
evaluation guidelines.

Microsemi offers the APT15F50K in TO-220 and TO-220 Full-Pack isolated
packages suited for 52-inch-and-larger displays. Additional devices,
such as the APT12F60K, address the 46- to 52-inch segment. Future Power
MOS8(TM) designs will be optimized for smaller screen sizes. Technical
information on the APT15F50K and APT12F60K devices is available on the
Microsemi website, http://www.microsemi.com. Samples can be ordered
from this site, or from Microsemi sales representatives and authorized
distributors.

About Microsemi

Microsemi Corporation, with corporate headquarters in Irvine,
California, is a leading designer, manufacturer and marketer of high
performance analog and mixed-signal integrated circuits, high
reliability semiconductors and RF subsystems. 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 include
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 website at http://www.microsemi.com.

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

"Safe Harbor" Statement under the Private Securities Litigation Reform
Act of 1995: Any statements set forth in this news release that are not
entirely historical and factual in nature, including without limitation
statements concerning expanding our commercial LCD TV market presence
with a new energy-efficient system solution optimized for High Voltage
LCD Integrated Power Supply (HV-LIPS) TV designs, are forward-looking
statements. These forward-looking statements are based on our current
expectations and are inherently subject to risks and uncertainties that
could cause actual results to differ materially from those expressed in
the forward-looking statements. The potential risks and uncertainties
include, but are not limited to, such factors as rapidly changing
technology and product obsolescence, potential cost increases,
variations in customer order preferences, weakness or competitive
pricing environment of the marketplace, uncertain demand for and
acceptance of the company's products, adverse circumstances in any of
our end markets, results of in-process or planned development or
marketing and promotional campaigns, difficulties foreseeing future
demand, potential non-realization of expected orders or non-realization
of backlog, product returns, product liability, and other potential
unexpected business and economic conditions or adverse changes in
current or expected industry conditions, difficulties and costs of
protecting patents and other proprietary rights, inventory obsolescence
and difficulties regarding customer qualification of products. In
addition to these factors and any other factors mentioned elsewhere in
this news release, the reader should refer as well to the factors,
uncertainties or risks identified in the company's most recent Form
10-K and all subsequent Form 10-Q reports filed by Microsemi with the
SEC. Additional risk factors may be identified from time to time in
Microsemi's future filings. The forward-looking statements included in
this release speak only as of the date hereof, and Microsemi does not
undertake any obligation to update these forward-looking statements to
reflect subsequent events or circumstances.


CONTACT:  Microsemi Corporation
          FINANCIAL CONTACT:
          John Hohener, Vice President and CFO
          EDITORIAL CONTACT:
          Cliff Silver, Corporate Communications Manager
          (949) 221-7100