AMIS30521C5212G

Overview

The AMIS30521C5212G is a fully integrated bipolar stepper motor driver manufactured by onsemi. It operates within a supply voltage range of 4.75V to 5.25V and supports load voltages from 6V to 30V. The device delivers an output current of 1.2A and features four half-bridge outputs. It utilizes an SPI interface for control and offers programmable step resolutions ranging from full step to 1/32 microstepping. The component is housed in a 32-NQFP (7x7) package with a bare pad and functions across a junction temperature range of -40°C to 172°C.

Feature Summary

• Fully integrated design combining control logic and power MOSFET stages
• SPI-based digital interface for configuration and monitoring
• Programmable microstepping resolution up to 1/32 step
• High thermal tolerance supporting extended junction temperatures

Applications

• Automotive ignition coil drive circuits
• Bipolar stepper motor control systems
• General purpose motor driver applications

Procurement Notes

Verify the specific suffix against official datasheets, as ordering codes may indicate variations in packaging or tape-and-reel configurations. Confirm availability status, as this part number has been marked as obsolete in some distributor records. Ensure compatibility with existing PCB footprints for the 32-NQFP package before procurement.

Selection Notes

Select this component for applications requiring a single-chip solution for bipolar stepper motors with SPI connectivity. It is suitable for environments demanding high operating temperatures up to 172°C. Consider the 1.2A current limit and 30V maximum load voltage when sizing for specific motor requirements.

Part Context

This device belongs to the AMIS30521 family of motor drivers. Related variants include the AMIS30512 series, which typically utilizes different packaging such as SOIC. The product line focuses on integrated solutions for automotive and industrial motor control, often featuring robust protection mechanisms and digital interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official manufacturer channels or authorized distributors for potential alternatives.

FAQ

What is the maximum supported microstepping resolution?

The AMIS30521C5212G supports a maximum microstepping resolution of 1/32.

How is the device controlled?

Control is achieved via a Serial Peripheral Interface (SPI).