A3988SJPTR-1-T

Overview

The A3988SJPTR-1-T is a fully integrated bipolar stepper motor driver manufactured by Allegro MicroSystems. It incorporates control logic, power stages, and protection circuits within a single DMOS package. The device supports full, half, and quarter step resolutions for precise motion control. It operates with a supply voltage range of 3V to 5.5V and handles load voltages from 8V to 36V. The output current capability is rated at 1.2A per phase. It utilizes a parallel interface for command input and is housed in a 48-LQFP-EP (7x7) surface-mount package with an exposed thermal pad.

Feature Summary

• Fully integrated design combining control logic and high-current power stages
• Supports multiple stepping modes including full, half, and quarter steps
• Built-in protection mechanisms against overcurrent and thermal overload

Applications

• Bipolar stepper motor control systems
• General purpose motion control applications
• Industrial automation equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix indicates the intended variant configuration. Check for obsolescence status as this part may be restricted for new designs. Ensure environmental compliance documentation matches project requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact solution for driving bipolar stepper motors is required. The 1.2A output rating suits moderate load applications. Verify that the system voltage aligns with the specified 8V to 36V load range. Consider the 48-pin LQFP footprint for PCB layout constraints. Evaluate thermal management needs due to the exposed pad design for heat dissipation.

Part Context

This part belongs to the A3988 family of stepper motor drivers from Allegro MicroSystems. It is designed for applications requiring reliable and efficient motor control without external complex circuitry. The device simplifies system design by integrating necessary drive functions into a single small form factor package suitable for space-constrained electronic assemblies.

Replacement Considerations

The A5988GJPTR-1-T is listed as a suggested replacement device. Verify compatibility regarding pinout, electrical specifications, and thermal characteristics before substitution.