STK672-442B-E

Overview

The STK672-442B-E is a hybrid integrated circuit designed as a unipolar, two-phase stepping motor driver featuring PWM current control. It operates within a supply voltage range of 10 V to 42 V and supports a maximum collector current of 2 A. The device utilizes a 19-pin SIP package with dimensions of 29.2 mm x 14.4 mm x 4.5 mm. It functions at a typical switching frequency of 48 kHz and withstands operating temperatures from 0°C to +105°C.

Feature Summary

• Integrates built-in protection mechanisms including motor terminal open detection, overcurrent detection, and overheat detection.
• Employs PWM current control for precise regulation of the stepping motor drive.

Applications

• Office photocopiers
• Printers

Procurement Notes

Verify the specific suffix (e.g., -E) against official onsemi documentation to confirm compliance with RoHS standards and environmental directives. Ensure the ordering part number matches the exact pin configuration and thermal characteristics required by the target application design.

Selection Notes

Select this component for applications requiring a compact, single-package solution for driving unipolar stepper motors. Consider the 19-pin SIP form factor for through-hole mounting constraints and verify that the 42 V maximum supply voltage aligns with the system power architecture.

Part Context

This model belongs to the STK672 series of hybrid ICs manufactured by onsemi. These devices are engineered specifically for driving two-phase stepping motors in office automation equipment. The series integrates power MOSFETs and control logic into a single module to simplify driver circuit design.

Replacement Considerations

Consult official cross-reference data for verified substitutes. Generic equivalents may not replicate the specific built-in diagnostic features or thermal performance of the original hybrid IC.