Allegro MicroSystems

A3972SB  

Motor Drivers, Controllers

A3972SB Description

The A3972SB is a high-performance, obsolete power management integrated circuit (PMIC) designed by Allegro MicroSystems. This IC is specifically tailored for driving bipolar stepper motors in a wide range of general-purpose applications. The A3972SB features a half-bridge output configuration with a maximum output current of 1.5A, making it suitable for driving motors with a load voltage range of 15V to 50V. The device operates within a supply voltage range of 4.5V to 5.5V, ensuring stable performance across various power supply conditions.

The A3972SB employs DMOS technology, which provides high efficiency and low power dissipation. It supports a step resolution of 1 to 1/64, allowing for precise control of motor movement. The IC is housed in a through-hole package, specifically a 24DIP tube, which facilitates easy integration into various electronic systems. Additionally, the A3972SB features a serial interface for communication and control.

A3972SB Features

• High Current Capability: The A3972SB can deliver up to 1.5A of output current, ensuring robust performance for demanding motor applications.
• Wide Load Voltage Range: With a load voltage range of 15V to 50V, the A3972SB can accommodate a variety of motor types and configurations.
• Precision Control: The device offers a step resolution of 1 to 1/64, enabling precise control of motor steps and smooth operation.
• Efficient DMOS Technology: Utilizing DMOS technology, the A3972SB achieves high efficiency and low power dissipation, which is crucial for maintaining performance in high-load scenarios.
• Stable Supply Voltage Range: Operating within a supply voltage range of 4.5V to 5.5V, the A3972SB ensures stable performance across different power supply conditions.
• Serial Interface: The serial interface allows for easy communication and control, simplifying integration into complex systems.
• Moisture Sensitivity Level 1: The A3972SB has an MSL rating of 1 (unlimited), making it suitable for a wide range of environmental conditions without the need for special handling.
• REACH Compliance: The A3972SB is REACH unaffected, ensuring compliance with environmental and safety regulations.

A3972SB Applications

The A3972SB is ideal for a variety of general-purpose applications where precise control of bipolar stepper motors is required. Some specific use cases include:

• Industrial Automation: The A3972SB can be used in robotic arms, conveyor systems, and other automated machinery where precise motor control is essential.
• Medical Equipment: In medical devices such as diagnostic machines and laboratory automation, the A3972SB ensures accurate and reliable motor operation.
• Office Automation: For applications like printers, scanners, and copiers, the A3972SB provides the necessary precision and reliability for smooth operation.
• Consumer Electronics: In devices such as digital cameras and home appliances, the A3972SB can drive motors with high efficiency and low noise.

Conclusion of A3972SB

The A3972SB by Allegro MicroSystems is a versatile and high-performance PMIC designed for driving bipolar stepper motors. Its unique features, such as high current capability, wide load voltage range, and precise step resolution, make it an excellent choice for a variety of applications. Despite being an obsolete product, the A3972SB remains a reliable solution for applications requiring robust and precise motor control. Its compliance with environmental regulations and ease of integration further enhance its value in the electronics industry.

A3972SB Documents

Download datasheets and manufacturer documentation for A3972SB

Datasheets :

A3972      

PCN Packaging :

Tape Change 27/Jan/2023      

HTML Datasheet :

A3972