STK672-410C-E

Overview

The STK672-410C-E is a unipolar constant-current chopper-type externally-excited 4-phase stepping motor driver hybrid IC manufactured by onsemi. It utilizes MOSFET power devices and integrates a microstep operation-supported 4-phase distributed controller to achieve high torque with low vibration and noise using a simple control circuit. The device features built-in current detection resistors, Schmitt trigger inputs with pull-up resistors, and selectable phase excitation modes including microstep sine-wave drive via external clock and reference voltage settings.

Feature Summary

• Microstep sine-wave driver operation supported by only an external clock input
• Selectable vector locus modes to match specific motor characteristics in microstep drive state
• Phase hold function maintained during excitation switching operations
• Internal noise elimination circuit combined with CMOS Schmitt trigger inputs

Applications

• Printer stepping motor drivers
• Copier stepping motor drivers
• X-Y plotter stepping motor drivers

Procurement Notes

Verify the exact part number suffix against official onsemi documentation to confirm pinout compatibility and thermal specifications. Ensure the ordering code matches the specific package variant required for your application. Cross-reference the datasheet revision date to validate feature availability and electrical parameter limits before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring precise microstep control for 4-phase unipolar motors without complex external logic. Evaluate the need for selectable vector loci to optimize torque and reduce resonance. Confirm that the external clock frequency and reference voltage ranges align with the target motor's performance requirements and system power constraints.

Part Context

This device belongs to the STK672 series of thick-film hybrid ICs designed for stepping motor applications. The series provides various output current capabilities and excitation types. The STK672-410C-E specifically addresses applications needing integrated microstep control and constant-current chopper regulation within a compact SIP package format.

Replacement Considerations

Direct substitutes include other members of the STK672 series such as the STK672-050 or STK672-010, provided their specific output current ratings and excitation type configurations match the design requirements. Verify pin-to-pin compatibility and thermal dissipation characteristics when considering alternative models from the same family.