Company Overview Products & Markets

1. Allegro MicroSystems, Inc. • Company Overview • Products & Markets AMS-171

2. Mission Statement Allegro MicroSystems, Inc., is dedicated to becoming the industry’s most responsive supplier of mixed-signal analog integrated circuits. Fundamental to our mission are continual quality and cost improvements to the products and services we provide to our customers. Total customer satisfaction, the only true measurement of our success, will result in above-average market growth and solid profitability which conforms to the high expectations of our customers, employees, and shareholders. AMS-171

3. Allegro MicroSystems: Company Profile • Semiconductor Manufacturer • Leader in Power Analog & Hall Effect Sensor ICs • International Operation, HQ in Massachusetts, USA • Worcester, MA, USA: Design, Manufacturing, Test, Marketing, Customer Service • Concord, NH, USA: Design, Assembly, Test • Willow Grove, PA, USA: Design, Manufacturing, Test • Manila, Philippines: Assembly, Test • Edinburgh, Scotland - Design • 2250 Employees Worldwide • Dedicated to a Total Quality Management Philosophy ISO 9000 and QS 9000 Certified • Markets served: automotive, power management, hard copy, industrial, consumer, information storage • Balanced worldwide sales: U.S., Europe, Japan, Asia-Pacific • Wholly Owned Subsidiary of Sanken Electric Worcester, Massachusetts, USA Concord, NewHampshire,, USA Willow Grove, Pennsylvania, USA Manila, Philippines AMS-171

4. Worcester Boston Massachusetts Allegro MicroSystems’ History Note: Sprague was founded in 1926 1976 1981 1984 1986 1987 1990 Penn Central Corp. Penn Central Corp. Penn Central Corp. Penn Central Corp. Penn Central Corp. Penn Central Corp. General Cable General Cable General Cable General Cable General Cable General Cable Sprague Electric Sprague Electric Sprague Electric Sprague Electric Sprague Semiconductor Group Sprague Electric Sprague Electric Solid State Scientific Solid State Scientific Solid State Scientific Sprague Semiconductor Group Sanken Allegro Sales Rep. Sales Rep. up to 1980 Sanken Sanken Sanken Sanken Sanken AMS-171

5. 1953 R&D Center formed for semiconductors 1955 First germanium transistor offered 1959 Basic IC patent on junction isolation 1961 R&D on planar transistors and ICs 1964 Basic IC patents on ion-implantation 1965 R&D on linear ICs 1967 Integrated FM detector patented 1967 Industry’s first Automotive IC (2113) 1968 Integrated Hall Effect sensor developed 1970 First monolithic power IC offered 1973 General Motors seat belt interlock IC developed Allegro Technical Milestones AMS-171

6. Allegro Technical Milestones • 1975 Basic patent on MOS Threshold adjust by Ion Implant • 1978 First Hall Effect Sensor ignition application for Harley Davidson • 1979 First Monolithic smart power BICMOS IC offered • 1980 Basic patent on polysilicon resistors with BICMOS • 1983 First US manufacturer to receive IECQ* approval *International Electrotechnical Quality Assessment System • 1984 First monolithic subscriber line interface circuit (SLIC) for Telecom • 1986 First monolithic smart power motor driver • 1987 First monolithic smart power sensor AMS-171

7. Allegro Technical Milestones • 1987 First inkjet print head driver • 1989 First low-voltage BCD integrated brushless motor driver • 1990 First silicon gate BICMOS production • 1994 ISO 9001 registration of Worcester facility • 1995 QS9000 (automotive) registration of Worcester facility • 1995 European Design Center opened • 1996 All Allegro facilities ISO registered • 1996 First Hall magnetic subassemblies offered • 1997 First product from new 150mm (6”) fab AMS-171

8. Allegro: Worldwide Organization Edinburgh, Scotland European Design Center London, UK European Admininstration Concord, NH Design, Assembly, Test Tokyo, Japan Sales & Marketing Worcester, MA Headquarters, US Sales & Mktg Design, Fab, Test Willow Grove, PA Design, Fab, Test Manila, Philippines Assembly & Test Buenos Aires, Argentina South American Design Center AMS-171

9. Sanken Electric Co., Ltd: Company Profile • Semiconductor Manufacturer • Leading Manufacturer of Semiconductors, Discretes, LEDs, Hybrids, MCM & Switch Mode Power Supplies • International Operation • Saitama, Japan, Headquarters & Design - Target December 1997 for ISO 9001 certification • Tokyo, Japan; Sales & Marketing - ISO9002 - Target December 1997 • Yamagata, Japan; Fab & Test - ISO9002 certified • Kashima, Japan; Assembly - ISO 9002 - Target December 1996 • Fukushima, Japan; Assembly - ISO 9002 certified • Ishikawa, Japan; Assembly & Test - ISO 9002 certified • Employees Worldwide, > 7,323 • Top Five Customers: 1. Mitsubishi Electric Corporation 2. Canon, Inc. 3. Sanshin Electric 4. Gold Star (LG) Group 5. NEC Corporation AMS-171

10. Served Markets Hard Copy & Communication Information Storage Automotive Magnetic Field Sensors Print Head Drivers Spindle Motor Controller / Drivers Power/Motor Driver ICs Display Drivers Servo / Voice-Coil Motor Drivers Paper Transport Motor Drivers Signal Processing ICs Combination Drivers ASICs Telecommunication ICs Power Conversion Industrial & Consumer Quasi-Resonant Flyback Conv. Display Drivers Automatic Voltage Switches Hazard Detection ICs Multi-Resonant Half-bridge Conv. Fan Controllers DC - DC Converters: Step Up/Down White Good ICs Linear Regulators: Conventional & LDD Power/Motor Driver ICs AMS-171