Allegro MicroSystems

A4985SESTR-T

A4985SESTR-T Description

The A4985SESTR-T is a high-performance, bipolar stepper motor driver IC designed for general-purpose applications. Manufactured by Allegro MicroSystems, this device is part of the Power Management (PMIC) category and is housed in a 24-pin QFN package, suitable for surface-mount applications. The A4985SESTR-T operates within a supply voltage range of 3V to 5.5V and can handle load voltages from 8V to 35V, making it versatile for various motor control applications.

A4985SESTR-T Features

The A4985SESTR-T offers a robust set of features that enhance its performance and reliability. Key technical specifications include:

• Current Output: Capable of delivering up to 1A of output current.
• Output Configuration: Half Bridge (4) configuration ensures efficient power delivery.
• Step Resolution: Offers multiple step resolutions, including 1, 1/2, 1/4, and 1/8, providing precise control over motor movement.
• Technology: Utilizes DMOS technology, known for its high efficiency and low power consumption.
• Interface: Logic interface for easy integration with control systems.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level (MSL): Level 2 (1 Year), suitable for a wide range of environmental conditions.
• Package: Tape & Reel (TR) packaging for efficient handling and assembly.

A4985SESTR-T Applications

The A4985SESTR-T is ideal for a variety of applications due to its versatility and performance. Some specific use cases include:

• General Purpose Motor Control: Suitable for applications requiring precise control of bipolar stepper motors.
• Industrial Automation: Ideal for driving stepper motors in industrial settings where reliability and precision are critical.
• Consumer Electronics: Can be used in consumer devices that require efficient and quiet motor operation.
• Medical Devices: Applicable in medical equipment where precise motor control is essential for functionality and safety.

Conclusion of A4985SESTR-T

The A4985SESTR-T from Allegro MicroSystems stands out as a reliable and efficient solution for driving bipolar stepper motors. Its wide voltage range, multiple step resolutions, and DMOS technology provide significant advantages over similar models. The device’s compliance with environmental and regulatory standards ensures it meets the demands of modern electronics manufacturing. Whether used in industrial automation, consumer electronics, or medical devices, the A4985SESTR-T offers precise control and high performance, making it an excellent choice for a variety of applications.