A3983SLP-T

Overview

The A3983SLP-T is a bipolar stepper motor driver manufactured by Allegro Microsystems, housed in a 24-pin TSSOP surface-mount package. It features an integrated DMOS full-bridge output stage capable of delivering up to 2A of output current per phase. The device supports a load voltage range from 8V to 35V and operates with logic supply voltages between 3V and 5.5V. It provides four selectable microstepping resolutions: full, half, quarter, and eighth step. The component includes built-in control logic for direction and step inputs, along with overtemperature protection and short-circuit protection mechanisms.

Feature Summary

• Integrates full-bridge DMOS power outputs with control logic for simplified system design
• Supports multiple microstepping resolutions including full, half, quarter, and eighth steps
• Includes internal overtemperature shutdown and short-circuit protection for enhanced reliability

Applications

• Bipolar stepper motor control in office automation equipment
• Motion control systems in industrial automation
• Actuator drive circuits in security and access control systems

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation, as variations such as -T or -TR indicate specific tape-and-reel packaging configurations. Confirm that the procurement source provides valid RoHS compliance data and moisture sensitivity level (MSL) ratings consistent with the datasheet. Ensure that the supplier is an authorized distributor to guarantee component authenticity and traceability.

Selection Notes

Select this component when designing bipolar stepper motor applications requiring integrated control and power stages. It is suitable for systems needing precise microstepping capabilities without external drivers. Consider the thermal performance requirements given the 2A output capability and the need for adequate PCB heat dissipation. Verify that the operating voltage range aligns with the motor coil specifications and available logic supplies.

Part Context

The A3983 belongs to Allegro's family of intelligent stepper motor drivers designed for low-cost, high-performance applications. It combines the functionality of a controller and a power driver into a single IC, reducing the bill of materials and board space. This integration simplifies the design process for engineers developing compact motion control solutions for consumer and industrial electronics.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Consult Allegro Microsystems technical support or official cross-reference guides for compatible alternatives.