Now Available for 24-Volt CCFL Inverter Solutions in LCD
                           Panel Designs

IRVINE, Calif., March 3, 2010 (GLOBE NEWSWIRE) -- Microsemi Corporation
(Nasdaq:MSCC), a leading manufacturer of high performance analog/mixed
signal integrated circuits and high reliability semiconductors, today
introduced a new CCFL controller featuring mega-contrast dimming for
24-volt cold cathode fluorescent light (CCFL) inverter applications in
small- to large-sized LCD displays.

A leader in large-screen LCD TV innovations for more than a decade,
Microsemi has expanded its CCFL portfolio to include the LX6502(TM)
full-bridge controller with integrated 12V gate drivers and patented
third-generation PureBLACKTM technology. The backlight controller's
PureBLACK technology sets new standards for black levels, dynamic
contrast, image uniformity, reliability and protection, and reduces
overall bill of material (BOM) costs.

"Microsemi now offers a full suite of PureBLACKdevices for any display
application, whether HV-LIPS or traditional 24V inverter
architectures," said Tom Kapucija, director of marketing with
Microsemi's Analog Mixed Signal Group. "Following the successful
adoption of our LX6503A(TM) and LX6523A(TM) PureBLACK devices in
HV-LIPS solutions by top TV manufacturers, we are now excited to add
this new device to our CCFL inverter controller family. The LX6502
gives LCD panel manufacturers and other OEMs yet another option for
using our mega-contrast dimming technology to deliver high-end image
quality with superior black levels and increased dynamic contrast."

Microsemi's LX6502 inverter brings advanced mega-contrast dimming to
large-screen displays with fully integrated on-chip 12V gate drivers to
support full-bridge, high- and low-side N-channel power MOSFET
configurations with input voltages to 35V. An integrated on-chip
voltage regulator with under-voltage lockout protection further
minimizes the overall system BOM costs. Additional BOM cost reductions
are enabled by a fully integrated suite of protection functions that
include soft-start, direct duty cycle control with maximum duty
limiting, and over-current and over-voltage protection.

The LX6502 enables quick design turns with its flexible and
user-configurable feature set. Programmable lamp-frequency operation is
further enhanced with high-accuracy, user-programmable burst-dimming
and strike-frequency control, as well as programmable strike and
open-lamp protection. Also included is a synchronization (SYNC)
function with selectable frequency ratio, frequency limit, auto detect,
and synchronization. This helps to improve image quality by eliminating
inverter interference effects on the video signals.

The LX6502 controller integrates all necessary functionality for LCD TV
or monitor displays in a single controller that also provides reliable
lamp striking, comprehensive brightness control modes (including analog
and pulse-width modulation burst dimming) and support for 24V inverter
topologies in existing backlight applications. The LX6502 controller
features tighter lamp current accuracy as compared to competitive
solutions.

Key LX6502 Features:
  --  Superior black level and dynamic contrast performance with built-in
      protection
  --  Integrated PureBLACK mega-contrast dimming technology
  --  Support for over-voltage, over-current and open-lamp protection
  --  Flexible and easy to use
  --  Support for full-bridge inverter configurations driving high- and
      low-side N-channel power MOSFETS
  --  Integrated 12V full bridge gate drivers with 800mA source/ 1000mA sink
      drive
  --  Power-on-reset and on-chip regulator with under-voltage lockout
      protection
  --  Inverter SYNC functionality
  --  PWM or analog-based burst dimming
  --  Wide range of supply operation from 10V to 35V
  --  Configurable and robust operation
  --  Reliable operation supported via programmable strike time and strike
      frequency
  --  User-configurable burst dimming frequency and fault time
  --  -40°C to +85°C operating temperature range


Pricing and Availability

LX6502 production samples are available now, and volume production is
scheduled to begin in April 2010. Pricing is less than $0.64 each in
OEM quantities. The LX6502 is offered in a 28-lead, wide-body small
outline (SOIC) plastic package. Data sheets are available on the
Microsemi website: http://www.microsemi.com. Application notes and
evaluation kit information are available from Microsemi sales
representatives: http://www.microsemi.com/contact/contactfind.asp.

Attachments:

Figure 1: LX6502 typical application
circuithttp://www.microsemi.com/primages/LX6502_Block_Diagram.pdf

Figure 2: Device
imagehttp://www.microsemi.com/primages/LX6502_Photo.jpg

Figure 3: LX6502 product
briefhttp://www.microsemi.com/primages/lx6502_Datasheet.pdf

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 the introduction of a new CCFL controller
featuring mega-contrast dimming for 24-volt cold cathode fluorescent
light (CCFL) inverter applications in small- to large-sized LCD
displays, 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
            (949) 221-7100
          EDITORIAL CONTACT:
          Cliff Silver, Corporate Communications Manager
            (949) 221-7100