STK672-330-E

Overview

The STK672-330-E is a unipolar fixed-current chopper type two-phase stepping motor driver hybrid IC manufactured by onsemi. It integrates power MOSFETs in the output stage and includes built-in protection features such as overcurrent, thermal shutdown, and undervoltage lockout. Designed for robust performance, it supports a maximum supply voltage of 45 V and delivers an output current capability suitable for driving small to medium-sized stepper motors. The device operates within a temperature range of -40°C to +125°C and is available in a SIP-22 package.

Feature Summary

• Unipolar fixed-current chopper control architecture for precise stepper motor operation
• Integrated power MOSFET output stage for high efficiency and drive capability
• Built-in comprehensive protection mechanisms including thermal shutdown and overcurrent limiting

Applications

• Two-phase stepper motor control systems
• Industrial automation equipment requiring reliable motion control
• Office automation devices such as printers and scanners

Procurement Notes

Verify the specific suffix and revision level against the latest official datasheet to ensure compatibility with your design requirements. Confirm availability status directly with authorized distributors or onsemi sales representatives, as lead times and stock levels fluctuate. Ensure that the ordering information matches the exact part number variant required for your application to avoid integration issues.

Selection Notes

Select this component when a unipolar configuration with integrated power switches is required for two-phase stepper motors. Consider the SIP-22 package constraints and thermal management needs given the integrated MOSFET design. Evaluate if the fixed-current chopper method aligns with your torque and noise specifications compared to other drive types.

Part Context

This component belongs to the STK672 series of hybrid ICs designed for stepping motor drivers. These ICs are known for combining logic, driver, and protection circuits into a single package, simplifying system design. The series typically serves applications where space savings and reduced external component count are critical for cost-effective motion control solutions.

Replacement Considerations

Check for direct cross-references from onsemi or former Sanyo Semiconductor product lines. Verify pin-to-pin compatibility and electrical parameter equivalence before substituting. Consult official obsolescence notices or PCNs for any recommended upgrades or alternative part numbers within the same manufacturer portfolio.