A3953SB-T

Overview

The A3953SB-T is a fully integrated bipolar stepper motor driver manufactured by Allegro MicroSystems. It operates on a single power supply ranging from 3V to 5.5V and supports load voltages up to 50V. The device delivers an output current of 1.3A and utilizes a 16-pin PowerDIP package with through-hole mounting. It functions as a complete control and power stage solution for bipolar motors.

Feature Summary

• Integrates full control logic and power output stages into a single chip
• Supports parallel interface operation for direct microcontroller connection
• Designed specifically for driving bipolar stepper motors

Applications

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

Procurement Notes

Verify component status carefully as this specific part number is marked as obsolete or discontinued in major distributor databases. Confirm availability of alternative packages such as the SOIC variant if surface mount is required. Ensure design-in timing accounts for potential supply chain constraints associated with end-of-life components.

Selection Notes

Select this component when a low-voltage, high-integration solution for bipolar stepper motors is required. It is suitable for applications needing a simple parallel interface without external logic. Consider the 1.3A output capability and 50V load voltage tolerance against specific motor requirements. Evaluate thermal performance within the DIP-16 package for the intended operating environment.

Part Context

This device belongs to the A3953 family of stepper motor drivers from Allegro MicroSystems. It provides a cost-effective, compact solution for motion control applications. The family includes variations in packaging, such as the SOIC version, to accommodate different board layout needs while maintaining identical electrical functionality.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.