STK672-732B-E

Overview

The STK672-732B-E is a thick-film hybrid IC designed for unipolar, two-phase stepper motor applications with PWM current control. It integrates MOSFET power devices to drive the motor phases while providing comprehensive protection mechanisms. The component includes built-in overcurrent and overheat detection functions that automatically turn off the output current when faults occur. A fault signal is actively driven low to indicate these conditions. Additionally, the device features a power-on reset function and supports Schmitt trigger inputs for reliable logic interfacing.

Feature Summary

• Built-in overcurrent and overheat detection functions that deactivate output current upon fault detection
• Active-low fault signal output indicating overcurrent or overheat conditions
• Integrated power-on reset function for stable initialization
• Schmitt trigger input support for noise immunity

Applications

• Office photocopiers
• Printers

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact electrical characteristics and package variations. Ensure the sourcing channel provides valid traceability for this hybrid IC. Cross-reference the ordering information section of the datasheet for precise part identification before procurement.

Selection Notes

Select this component for unipolar stepper motor drives requiring integrated protection. Verify compatibility with the target motor's voltage and current requirements. Confirm that the external resistor values align with the internal current detection specifications. Ensure the application environment stays within the specified operating temperature range.

Part Context

This part belongs to the STK672 series of thick-film hybrid ICs manufactured by onsemi (formerly Sanyo Semicon Device). The series focuses on stepper motor driving solutions with integrated power stages and protection features. These components are engineered for compact designs in office automation equipment.

Replacement Considerations

Check for pin-compatible alternatives within the same series, such as the STK672-740AN-E, ensuring functional equivalence in protection circuits and drive capabilities.