AMIS30543C5431RG

Overview

The AMIS-30543C5431RG is a single-chip stepper motor driver designed for unipolar and bipolar stepper motors. It integrates a high-current H-bridge power stage, a microstepping generator, and a serial interface. The device supports full, half, and fractional step resolutions up to 1/256. It features programmable current control, decay mode selection, and thermal shutdown protection. The component operates within a specified voltage range and includes diagnostic outputs for fault detection.

Feature Summary

• Integrates a high-current H-bridge power stage capable of driving unipolar and bipolar stepper motors directly.
• Includes an on-chip microstepping generator supporting full, half, and fractional step resolutions up to 1/256.
• Features a serial interface for configuration of current levels, decay modes, and step resolution.
• Provides comprehensive protection mechanisms including overcurrent, overtemperature, and undervoltage lockout.

Applications

• Automotive seat adjustment systems
• Industrial automation actuators
• Building automation and HVAC controls

Procurement Notes

Verify the specific suffix 'C5431RG' against the manufacturer's official datasheet to confirm package type, temperature grade, and RoHS compliance status. Ensure the ordering part number matches the exact electrical specifications required for the target application circuit design.

Selection Notes

Select this component when a single-chip solution for stepper motor control is required with integrated microstepping capabilities. Consider the maximum output current rating and thermal performance relative to the motor load. Verify compatibility with the system's serial communication protocol and voltage supply constraints before integration.

Part Context

This part belongs to the AMIS-305xx series of stepper motor drivers from onsemi. These devices are engineered for robust performance in automotive and industrial environments. The series typically offers integrated protection features and flexible control options to simplify motor drive designs.

Replacement Considerations

Consult official cross-reference lists or equivalent product guides from onsemi for verified substitutes. Ensure any replacement maintains compatible pinout, voltage ratings, and thermal characteristics.

FAQ

What types of stepper motors does the AMIS-30543 support?

The device supports both unipolar and bipolar stepper motors through its integrated H-bridge power stage.

What is the maximum microstepping resolution available?

The internal microstepping generator supports resolutions up to 1/256 step.