STK672-630C-E

Overview

The STK672-630C-E is a thick-film hybrid IC designed as a unipolar, constant-current chopper-type stepper motor driver. It integrates MOSFET power devices and a microstep operation-supported controller to drive 4-phase stepping motors with high torque and low vibration. The device utilizes external excitation and supports distributed control for noise reduction. Key electrical parameters include a maximum collector-emitter voltage of 42 V, a maximum IGBT collector current of 2.2 A, and a typical switching frequency of 45 kHz. It operates on a supply voltage range of 4.75 V to 5.25 V and features a 19-pin SIP package suitable for through-hole mounting.

Feature Summary

• Integrates a microstep operation-supported 4-phase distributed controller for high torque and low vibration performance
• Utilizes unipolar constant-current chopper technology with built-in MOSFET power devices
• Includes protection functions such as overcurrent detection and overheat detection that trigger output current cutoff
• Features active low fault signal output and simultaneous on prevention logic

Applications

• Stepper motor drivers for office photocopiers
• Stepper motor drivers for printers
• X-Y plotter positioning systems

Procurement Notes

Verify the specific suffix 'C' against official onsemi documentation to confirm pinout compatibility and exact electrical ratings, as variations within the STK672 family may exist. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability. Cross-reference the manufacturing date code and RoHS compliance status with the latest datasheet revisions before integration into production designs.

Selection Notes

Select this component when designing systems requiring precise microstep control for 4-phase unipolar stepper motors. It is appropriate for applications needing integrated protection against overcurrent and overheating conditions. Consider the 19-pin SIP package constraints and the requirement for external resistors to set motor current levels. Verify that the system's thermal management can handle the power dissipation characteristics at the intended operating temperature range.

Part Context

This part belongs to the STK672 series of thick-film hybrid ICs originally developed by Sanyo Semicon Device and later acquired by onsemi. The series is widely recognized in the office automation industry for driving stepping motors in peripherals like copiers and printers. The STK672-630 variant specifically targets higher current requirements compared to lower-end models in the same family, offering robust performance in compact packages.

Replacement Considerations

Check for direct substitutes such as the STK672-630AN-E or other variants within the STK672 family that share identical pinouts and electrical specifications. Verify functional compatibility regarding microstep support and protection thresholds before substitution.