STK672-540

Overview

The STK672-540 is a hybrid integrated circuit designed as a unipolar, two-phase stepping motor driver featuring PWM current control. It integrates power MOSFETs and logic to drive stepper motors directly from microprocessor outputs. The device supports a supply voltage range of 4.75V to 524V and delivers a continuous output current of 3.3A. It operates within a temperature range of 0°C to 105°C TC. The component utilizes a SIP package with surface mount or through-hole mounting options, providing a compact solution for motion control electronics.

Feature Summary

• Integrates PWM current control for precise motor speed regulation
• Combines power MOSFETs and logic in a single hybrid IC
• Direct interface capability with standard microprocessor outputs

Applications

• Unipolar two-phase stepping motor driving
• Motion control electronics systems
• Industrial automation actuators

Procurement Notes

Verify the specific suffix and package variant against the manufacturer's latest datasheet before ordering. Confirm thermal management requirements for the intended operating temperature range. Ensure the supply voltage does not exceed the maximum rating of 524V. Check for RoHS compliance status if required by your assembly process. Validate pin compatibility with existing PCB layouts.

Selection Notes

Select this component when a unified solution for unipolar stepper motor control is required. It is suitable for applications needing direct microprocessor interfacing without external logic gates. Consider the 3.3A current capacity for moderate load requirements. Evaluate the SIP package constraints for board space limitations. Compare against discrete solutions for integration density benefits.

Part Context

This part belongs to the STK672 series of hybrid motor drivers from onsemi. These devices are engineered for robust performance in industrial environments. The series typically includes variants with different voltage or current ratings. They represent a transition from discrete driver designs to integrated modules. This specific model focuses on 5V logic compatibility and high voltage tolerance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.