Allegro MicroSystems, Inc. to Exhibit at Portable Design China Power Management Conference

Worcester, MA, November 16, 2005 — Allegro MicroSystems, Inc. will exhibit at the Power Management 2005 Conference as a platinum sponsor. The conference takes place on November 17th in Shenzhen, China and is organized by Portable Design China, the PennWell Corporation and ACT International. The conference expects attendance from 100 - 150 design engineers who specialize in power design for portable systems. Raymond Zheng, Allegro's Technical Sales Director for China, will be presenting on the broad topic of Power Management for Portables immediately following the keynote speaker.

One of Allegro's goals is to expand the power management line by leveraging our analog power technologies in the area of regulators and controllers. Mark Gaboriault, Strategic Marketing Manager for Allegro's Power Management portfolio, believes that this is a key conference to attend. He states, "By exhibiting at the Power Management conference we will be able to engage with key portable design engineers in China, a market that is vital to our growth. We will have the opportunity to introduce key products within our portfolio enabling us to increase our brand awareness in this high-growth market."

In addition to several products that will be forthcoming from Allegro in the coming months, Allegro will also be actively promoting several key products at this conference. Please see below for a detailed list:

A8436/38/39 - Photoflash capacitor chargers with IGBT driver
A8499 - High voltage step-down regulator
A8483 - 1.2 MHz Step-down converter for display bias supply
A8430/31 - White LED drivers with constant current step-up converters

To download the datasheets or to request samples of the above devices, please log on to Allegro's website at www.allegromicro.com.

About Allegro

Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits. Allegro's innovative solutions serve high-growth applications within the automotive, communications, computer/office automation, consumer and industrial markets. Allegro is headquartered in Worcester, Massachusetts (USA) with design and applications centers located in North and South America, Asia, and Europe. Further information about Allegro can be found at www.allegromicro.com.

Editorial Contact:
Stephanie Fennelly
Director - Marketing Communications
Tel: (508) 854-5363
sfennelly@allegromicro.com