Allegro MicroSystems, Inc.

Allegro MicroSystems, Inc. is a global leader in the development, manufacture and marketing of analog power IC and Hall-effect sensors. Allegro is headquartered in Worcester, MA, where design, manufacturing, test, marketing and customer service are located in a 250,000 sq. ft. facility. The company owns several manufacturing plants worldwide to ensure that we always meet the strict automotive requirements of our customers. Allegro also maintains key relationships with major subcontractors to accommodate fluctuations in upside demand. Sales are balanced worldwide throughout North and South America, Europe, Japan and Asia-Pacific, with products sold primarily to OEMs through a strong worldwide sales channel that includes a direct sales force, manufacturers, representatives and distributors. The company is ISO 9001, ISO 14001 and QS-9000 registered and has received quality awards from leading manufacturers worldwide.

Allegro's innovative, system-level solutions serve high-growth applications within the automotive, computer/office automation, industrial, consumer and communications markets, while our leading-edge product and processes reinforce our expertise in motor driver and power management technology. We are a world leader in automotive sensing electronics and integrated Hall-effect magnetic sensors. Within the automotive area, our products serve electronic applications within virtually all automotive brands. In addition, we are a market leader within printer, scanner, copier and high-volume consumer (e.g. cellular phones) applications.

Application Note

Constant-Current LED Drivers (pdf, 377KB)