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A3981_V Datasheet (PDF) - Allegro MicroSystems

A3981_V Datasheet PDF - Allegro MicroSystems
Part # A3981_V
Download  A3981_V Download

File Size   947.25 Kbytes
Page   43 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Automotive, Programmable Stepper Driver

A3981_V Datasheet (PDF)

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A3981_V Datasheet PDF - Allegro MicroSystems

Part # A3981_V
Download  A3981_V Click to download

File Size   947.25 Kbytes
Page   43 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description Automotive, Programmable Stepper Driver

A3981_V Datasheet (HTML) - Allegro MicroSystems

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A3981_V Product details

Description
The A3981 is a flexible microstepping motor driver with built-in translator for easy operation. It is a single-chip solution, designed to operate bipolar stepper motors in full-, half-, quarter- and sixteenth-step modes, at up to 28 V and ±1.4 A. The A3981 can be controlled by simple Step and Direction inputs, or through the SPI-compatible serial interface that also can be used to program many of the integrated features and to read diagnostic information.

Features and Benefits
• Peak motor current up to ±1.4 A, 28 V
• Low RDS(on) outputs, 0.5 Ω source and sink, typical
• Automatic current decay mode detection/selection
• Mixed, Fast, and Slow current decay modes
• Synchronous rectification for low power dissipation
• Internal OVLO, UVLO, and Thermal Shutdown circuitry
• Crossover-current protection
• Short circuit and open load diagnostics
• Hot and cold thermal warning
• Stall detect features
• SPI-compatible or simple Step and Direction motion control
• Highly configurable via SPI-compatible serial interface

Applications
• Automotive stepper motors
• Engine management
• Headlamp positioning




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About Allegro MicroSystems


Allegro MicroSystems is a semiconductor company that designs, manufactures, and markets high-performance power and sensing solutions. The company was founded in 1990 and is headquartered in Manchester, New Hampshire, USA.

Allegro MicroSystems' product portfolio includes Hall-effect sensors, power ICs, motor drivers, and magnetic digital position sensors. These products are used in a wide range of applications, including automotive, industrial, and consumer electronics.

Allegro MicroSystems is known for its expertise in magnetic sensing technology, which is used in many of its products. The company's products are designed to meet the highest standards of performance and reliability, and are manufactured using the latest technology and materials. Allegro MicroSystems also offers custom design and engineering services to meet the specific needs of its customers.

Allegro MicroSystems has a global presence, with sales offices and representatives located around the world. The company is dedicated to delivering innovative and reliable power and sensing solutions that meet the evolving needs of the electronics industry. In 2021, Allegro MicroSystems went public through an initial public offering (IPO) on the NASDAQ stock exchange.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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