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Product Detailed Parameters
- Description：IC MOTOR DRIVER UNIPOLAR 19SIP
- Series：-
- Mfr：onsemi
- Package：Bulk,Tube
- Motor Type - Stepper：Unipolar
- Motor Type - AC, DC：-
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (2)
- Interface：Parallel
- Technology：Power MOSFET
- Step Resolution：1, 1/2, 1/4, 1/8, 1/16
- Applications：General Purpose
- Current - Output：2A
- Voltage - Supply：4.75V ~ 5.25V
- Voltage - Load：0V ~ 46V
- Operating Temperature：0°C ~ 105°C (TC)
- Mounting Type：Through Hole
- Package / Case：19-SSIP Formed Leads
- Supplier Device Package：19-SIP
- Grade：-
- Qualification：-
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Overview
The STK672-432BN-E is a thick-film hybrid integrated circuit designed for unipolar stepper motor control. It integrates a constant-current chopper circuit with a built-in micro-stepping controller. The device supports a maximum IGBT collector current of 2A and withstands a maximum collector-emitter voltage of 42V. It operates on a logic supply voltage ranging from 4.75V to 5.25V, with a typical switching frequency of 48kHz. Housed in a 19-pin SIP package, the component measures 29.2mm in length, 14.4mm in width, and 4.5mm in height. It functions within an operating temperature range of 0°C to +105°C.
Feature Summary
- Integrates a constant-current chopper circuit with a built-in micro-stepping controller for precise motor positioning.
- Designed specifically for unipolar output configurations in stepper motor applications.
- Utilizes thick-film hybrid IC technology for robust performance.
Applications
- Stepper motor control systems
- Micro-stepping driver circuits
Procurement Notes
Verify the specific suffix 'BN' against official onsemi documentation to confirm pinout and electrical specifications match the required design. Ensure the 19-pin SIP form factor aligns with the target PCB layout. Confirm that the 42V Vceo and 2A Ic ratings are sufficient for the intended load. Check for any RoHS compliance markings if environmental regulations apply to the final assembly.
Selection Notes
Select this component when a monolithic solution for unipolar stepper motors is required. The integrated micro-stepping controller simplifies design by reducing external component count. Verify that the 5V logic interface matches the system's control signals. Consider the thermal dissipation capabilities inherent to the SIP package relative to the 2A current rating.
Part Context
This part belongs to the STK672 series of stepper motor drivers manufactured by onsemi. These devices are classified as thick-film hybrid ICs. The series typically combines power switching elements with control logic to drive stepper motors efficiently. The STK672-432BN-E represents a specific variant within this family tailored for unipolar configurations.
Replacement Considerations
Publicly confirmed substitute part numbers for the STK672-432BN-E are not available in the provided source material. Cross-referencing with other STK672 variants requires careful verification of pin compatibility and electrical limits.
