Allegro MicroSystems

A3988SEVTR-T

A3988SEVTR-T Description

The A3988SEVTR-T is a high-performance, integrated motor driver IC designed for driving bipolar stepper motors and brushed DC motors. Manufactured by Allegro MicroSystems, this device is part of the Power Management (PMIC) category and is housed in a 36-pin QFN package suitable for surface mount applications. The A3988SEVTR-T operates within a supply voltage range of 3V to 5.5V and can handle load voltages from 8V to 36V, making it versatile for a variety of motor control applications.

A3988SEVTR-T Features

The A3988SEVTR-T offers several key technical specifications and performance benefits:

• Current Output: The device supports a maximum current output of 1.2A, ensuring robust performance for demanding motor applications.
• Output Configuration: It features a half-bridge configuration with eight outputs, providing flexibility in motor control schemes.
• Step Resolution: The A3988SEVTR-T supports step resolutions of 1, 1/2, and 1/4, enabling precise control over motor movement and reducing audible noise and vibration.
• Technology: Utilizing DMOS technology, the A3988SEVTR-T ensures high efficiency and low power dissipation.
• Interface: The parallel interface allows for straightforward integration with microcontrollers and other digital systems.
• Compliance: The device is REACH unaffected and ROHS3 compliant, ensuring it meets stringent environmental and regulatory standards.
• Moisture Sensitivity Level: With an MSL rating of 2 (1 Year), the A3988SEVTR-T is suitable for a range of manufacturing environments.
• Product Status: Although marked as "Not For New Designs," the A3988SEVTR-T remains a reliable choice for existing applications and legacy systems.

A3988SEVTR-T Applications

The A3988SEVTR-T is ideal for general-purpose applications requiring precise motor control. Specific use cases include:

• Stepper Motors: The device's ability to drive bipolar stepper motors with variable step resolutions makes it perfect for applications such as 3D printers, CNC machines, and robotic systems where precise positioning is critical.
• Brushed DC Motors: For applications involving brushed DC motors, the A3988SEVTR-T provides reliable control, making it suitable for consumer electronics, automotive systems, and industrial automation.
• General Purpose Motor Control: The broad voltage range and robust current handling capabilities make the A3988SEVTR-T a versatile solution for a wide range of motor control needs.

Conclusion of A3988SEVTR-T

The A3988SEVTR-T from Allegro MicroSystems is a comprehensive motor driver IC tailored for driving bipolar stepper motors and brushed DC motors. Its robust technical specifications, including a wide operating voltage range, high current output, and flexible step resolution options, make it a reliable choice for precise motor control applications. While it is not recommended for new designs, the A3988SEVTR-T remains a valuable component for existing systems and legacy applications, ensuring continued performance and reliability.