About Allegro

Who We Are


At Allegro MicroSystems, we’re passionate about developing intelligent solutions that move the world toward a safer and more sustainable future – while giving our customers a competitive edge. With more than 50 years of experience developing advanced semiconductor technology and application-specific algorithms, Allegro is a global leader in power and sensing solutions for motion control and energy-efficient systems. Through our innovations, we are helping our customers make breakthrough advancements in areas like advanced mobility, green energy, and factory automation. Each year we ship over one a billion units into these applications to support our 10,000+ customers around the globe, including over 50 automotive OEMs.  The company is ISO/TS16949:2009 and ISO14001:2015 certified and has received quality awards from leading manufacturers worldwide.

Allegro is headquartered in Manchester, NH (USA) and our diverse team of 4,500+ employees is spread across 13 countries, powering our global engineering, manufacturing and support teams to enable our innovative culture. That’s why we work hard to create a collaborative, energetic environment that rewards ingenuity and helps our employees make a difference every day.

A Global Footprint

Allegro understands that balancing our investments in R&D and manufacturing is critical to long-term success. We recently opened new design centers in South America and Europe, and we continue to invest in new technologies and strategic wafer fabrication partnerships. We have also expanded our Asian manufacturing capabilities, and invested in our internal wafer fab, Polar Semiconductor through a wafer fabrication expansion and optimization project. These significant activities solidify our market leadership position and ensure that we are poised to meet the future needs of all customers. We are committed to manufacturing integrated circuits with the highest standards of quality, reliability and service.

Technology & Innovation

  • We’re passionate about innovation at Allegro. It’s in everything we do. It’s how we develop products, how we service customers, and how we make things more efficient.
  • >350 active patents: Our portfolio of over 350 active patents is a leading indicator of the strength of our company. In fact, we were just ranked as one of the most innovative companies in our region.
  • We’re #1 in Magnetic Sensing: Allegro ranks #1 globally in magnetic sensors and automotive magnetic sensors.We’ve shipped over 11 Billion Sensor ICs into everything from IoT to self-steering vehicles.“Innovation by Numbers.” 
    • americaninno.com, January 24, 2019
    • IHS-Markit Magnetic Sensors Market Tracker, 2018
  • Disruptive Power Solutions: Our innovative, intelligent power ICs, such as our new QuietMotion™ family of Brushless DC fan drivers, offers improved efficiency and value-added integration.
  • Differentiated Technology: Our automotive grade, proprietary wafer and package technology and algorithm expertise enables our market leadership.

Allegro's Divisions

The Sensor IC group designs and develops magnetic speed and digital position sensor ICs, including Allegro’s back-biased magnetic speed sensor IC solutions that have revolutionized automotive electronic systems. Allegro ICs offer contactless sensing for applications such as direction-detection, gear-tooth, speed and position sensing for automotive, industrial, consumer, and portable electronics.

The Advanced Sensor Technology group designs and develops linear, angle and current sensor ICs. Allegro offers innovative magneto-resistive AxMR and Hall-effect magnetic sensing technologies for applications such as advanced driver assistance systems, industrial automation, loT, and hybrid/electric vehicles.

The Power IC group designs and develops motor driver ICs, switching regulators, and LED drivers for automotive applications such as electronic power steering and infotainment, as well as energy-efficient computer and industrial applications.



Responsible Business Alliance (RBA) Supporting Member

As a Supporter Member of the Responsible Business Alliance (RBA), Allegro MicroSystems, LLC fully supports the vision and goals of the RBA:

  • Vision: A global electronics industry that creates sustainable value for workers, the environment and business.
  • Mission: Members, suppliers and stakeholders collaborate to improve working and environmental conditions through leading standards and practices.
Allegro Global Organization
Please click here to view a map of our global operations.
Magnetic Sensor IC Overview
Please click here for an overview of our Magnetic Sensor IC Portfolio.
Power IC Overview
Please click here for an overview of our Power IC Portfolio.
General Information
Phone: 603-626-2300
Fax:     603-641-5336
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