STK672-442AN-E

Overview

The STK672-442AN-E is a hybrid integrated circuit designed as a fully integrated driver for unipolar, two-phase stepper motors. It incorporates PWM current control and built-in overcurrent protection within a single package. The device utilizes Power MOSFET technology and operates with a supply voltage range of 4.75 V to 5.25 V. It features a 19-pin SIP (Single Inline Package) with formed leads for through-hole mounting. The unit supports a typical switching frequency of 45 kHz and functions within an operating temperature range of 0°C to +105°C.

Feature Summary

• Fully integrated driver combining control logic and power stage for unipolar stepper motors
• Built-in overcurrent protection for enhanced operational safety
• PWM current control capability for precise motor regulation

Applications

• Unipolar two-phase stepper motor drive systems
• Industrial automation equipment requiring integrated motor control
• Precision positioning mechanisms in manufacturing machinery

Procurement Notes

Verify component status carefully as this part may be obsolete. Confirm package type and pin configuration against legacy system requirements. Ensure compatibility with existing PCB layouts utilizing the 19-SIP form factor. Check for available evaluation boards or documentation if design validation is required. Source only from authorized distributors to guarantee authenticity.

Selection Notes

Select this component specifically for applications requiring a monolithic solution for unipolar stepper motors. It is suitable where space constraints favor a SIP package over discrete solutions. Consider the 4.75 V to 5.25 V supply requirement when designing power rails. Evaluate thermal management needs given the +105°C maximum junction temperature rating.

Part Context

This part belongs to the STK672 series of hybrid ICs originally developed by Sanyo Semiconductor, now part of onsemi. These devices are specialized for driving stepper motors in compact forms. The series typically includes variants with different current ratings and pin configurations, serving legacy industrial and consumer electronics markets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements may require redesigning the power stage or control interface. Consult manufacturer archives for potential cross-reference data.