AMIS30522C5222G

Overview

The AMIS-30522C 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, quarter, eighth, sixteenth, and thirty-second step resolutions. It features overcurrent protection, thermal shutdown, and under-voltage lockout. The operating voltage range extends up to 46V. Control signals include STEP, DIR, ENABLE, and MS1/MS2 for microstep selection.

Feature Summary

• Integrated microstepping capability with multiple resolution options
• Built-in protection mechanisms including thermal shutdown and overcurrent limiting
• Serial communication interface for configuration and control

Applications

• Office automation equipment
• Security systems
• Medical devices

Procurement Notes

Verify the specific suffix 'G' indicates lead-free compliance per RoHS standards. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets the application's environmental specifications. Check for any specific ordering prefixes or suffixes that may affect availability or documentation.

Selection Notes

Select this component when a single-chip solution for stepper motor control is required. It is suitable for applications needing precise positioning without external logic. Consider the current rating and voltage limits relative to the motor specifications. Evaluate the need for microstepping versus full-step operation based on smoothness requirements.

Part Context

This part belongs to the AMIS-305xx family of stepper motor drivers from onsemi. These drivers are designed to simplify the design of stepper motor control systems by integrating power and logic functions. The family offers various interfaces and performance levels to suit different market segments.

Replacement Considerations

Check for direct pin-to-pin replacements within the AMIS-305xx series. Verify compatibility with existing firmware if the replacement has different register maps. Ensure electrical characteristics such as current drive and voltage ratings are sufficient.