STK672-120-SL-E

Overview

The STK672-120-SL-E is a thick-film hybrid integrated circuit designed as a two-phase stepping motor driver. It utilizes a unipolar fixed-current chopper scheme with self-excited PWM to manage motor current. The device integrates power MOSFETs in the output stage and includes a built-in phase signal distribution IC, enabling speed control based on external clock frequency. It supports both 2-phase and 1-2 phase excitation modes for precise motor operation.

Feature Summary

• Integrates power MOSFETs and phase signal distribution for simplified drive circuits
• Supports variable speed control via external clock input frequency
• Enables flexible motor control through selectable 2-phase or 1-2 phase excitation

Applications

• Two-phase stepping motor drive in send/receive facsimile units

Procurement Notes

Verify component authenticity and datasheet revisions upon request. Confirm package integrity and pin configuration match specifications. Check for RoHS compliance status and environmental certifications. Ensure storage conditions meet moisture sensitivity level requirements before assembly.

Selection Notes

Select this component for applications requiring integrated phase distribution and fixed-current chopper control. Suitable for designs needing direct clock-driven speed regulation without additional logic. Verify voltage and current ratings align with specific motor coil requirements.

Part Context

This part belongs to the STK672 series of hybrid ICs from onsemi. These components are specialized for stepper motor control, combining power stages and logic functions into a single package to reduce board space and design complexity compared to discrete solutions.

Replacement Considerations

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