Allegro MicroSystems

A3955SB-T

A3955SB-T Description

The A3955SB-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 through-hole 16DIP package. It operates within a supply voltage range of 4.5V to 5.5V and can handle a load voltage from 4.5V to 50V. The A3955SB-T is capable of delivering an output current of up to 1.5A, making it suitable for driving bipolar stepper motors with precision and reliability. The device features a half-bridge output configuration with two channels, enabling versatile control over motor operations. It supports various step resolutions, including full step, half step, quarter step, and eighth step, providing flexibility in motor control applications. The A3955SB-T is REACH unaffected and RoHS3 compliant, ensuring environmental safety and regulatory adherence. With a moisture sensitivity level (MSL) of 1 (unlimited), the device is suitable for a wide range of manufacturing processes.

A3955SB-T Features

• High Output Current: The A3955SB-T can deliver up to 1.5A of output current, ensuring robust performance in demanding motor applications.
• Flexible Step Resolutions: The device supports multiple step resolutions (1, 1/2, 1/4, 1/8), allowing for precise control and smooth motor operation.
• Wide Voltage Range: With a supply voltage range of 4.5V to 5.5V and a load voltage range of 4.5V to 50V, the A3955SB-T is versatile and adaptable to various power supply configurations.
• Half Bridge Configuration: The half-bridge output configuration with two channels provides efficient control over bipolar stepper motors.
• Environmental Compliance: The A3955SB-T is REACH unaffected and RoHS3 compliant, meeting stringent environmental and regulatory standards.
• Moisture Sensitivity Level: An MSL of 1 (unlimited) ensures the device is suitable for a wide range of manufacturing processes without moisture-related concerns.

A3955SB-T Applications

The A3955SB-T is ideal for a variety of general-purpose applications requiring precise control of bipolar stepper motors. Its high output current and flexible step resolutions make it suitable for applications such as:

• Industrial Automation: Controlling stepper motors in robotic arms, conveyor systems, and other automated machinery.
• Medical Devices: Driving stepper motors in medical equipment like infusion pumps, diagnostic machines, and laboratory automation.
• Office Automation: Enabling precise motor control in printers, scanners, and other office equipment.
• Consumer Electronics: Providing reliable motor control in devices such as cameras, scanners, and home automation systems.

Conclusion of A3955SB-T

The A3955SB-T is a versatile and reliable bipolar stepper motor driver IC, offering high output current, flexible step resolutions, and a wide voltage range. Its compliance with environmental and regulatory standards ensures it meets the demands of modern manufacturing processes. While the product is now obsolete, its unique features and performance benefits make it a valuable component for applications requiring precise control of bipolar stepper motors. Allegro MicroSystems' commitment to quality and innovation ensures that the A3955SB-T remains a reliable choice for general-purpose motor control applications.