STK672-622A-E

Overview

The STK672-622A-E is a hybrid integrated circuit designed as a unipolar, two-phase stepping motor driver with PWM current control. It features a maximum output current of 1.2A per channel and utilizes a 19-pin SIP package. The device incorporates built-in overcurrent detection for protection. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a typical switching frequency of 45 kHz. The component is rated for an operating temperature range from 0°C to +105°C.

Feature Summary

• Integrated PWM current control for precise stepper motor operation
• Built-in overcurrent detection mechanism for circuit protection
• Fully integrated design for unipolar two-phase applications

Applications

• Stepper motor drive systems
• Unipolar motor control circuits
• Precision motion control applications

Procurement Notes

Verify the specific suffix 'E' against official onsemi documentation to confirm compliance with RoHS standards and environmental directives. Ensure the 19-SIP package dimensions match the target PCB layout requirements. Confirm that the 1.2A per channel rating aligns with the load specifications. Cross-reference the datasheet revision date to ensure access to the latest electrical characteristics and thermal data before finalizing procurement.

Selection Notes

Select this component for applications requiring a fully integrated solution for unipolar stepper motors. The 1.2A per channel output capability suits moderate power requirements. Verify compatibility with the 4.75V to 5.25V logic supply range. Consider the 19-SIP package for through-hole mounting if space permits. Ensure the operating temperature range meets the environmental conditions of the end application.

Part Context

The STK672 series comprises hybrid ICs developed by onsemi (formerly SANYO Semiconductor) for motor driving applications. These components integrate power MOSFETs and control logic into a single package. The STK672-622A-E specifically targets unipolar stepper motors, offering a compact alternative to discrete driver designs. The series is known for reliability in industrial and consumer electronics.

Replacement Considerations

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