A3979SLPTR

Overview

The A3979SLPTR is a fully integrated bipolar stepper motor driver and controller manufactured by Allegro MicroSystems. It utilizes DMOS technology to provide four half-bridge outputs capable of delivering up to 2.5A output current. The device supports a load voltage range from 8V to 35V and operates with a logic supply voltage between 3V and 5.5V. It features selectable microstepping resolutions including full, half, quarter, and sixteenth steps. The component is housed in a 28-pin TSSOP package with an exposed pad for thermal management.

Feature Summary

• Integrates control logic and power stage into a single chip
• Supports multiple microstepping resolutions for smooth motion
• Includes built-in translator for simplified interface

Applications

• General purpose bipolar stepper motor control
• Office automation equipment
• Industrial motion control systems

Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure compatibility with required packaging and temperature grades. Confirm that the component meets all necessary environmental standards for the intended deployment environment before finalizing procurement decisions.

Selection Notes

Select this component when a compact solution for bipolar stepper motors is required. It is suitable for applications needing integrated control without external drivers. Ensure the system voltage remains within the specified 8V to 35V range and current demands do not exceed the rated output capacity.

Part Context

This part belongs to the Allegro A3979 series of stepper motor drivers. It is designed for applications requiring high integration and precise control. The series is known for its robust DMOS technology and ease of use in various motor control scenarios.

Replacement Considerations

Check for direct pin-to-pin replacements within the same manufacturer family. Verify electrical specifications and package dimensions match exactly before substitution.