SLA7073MR

Overview

The SLA7073MR is a fully integrated unipolar stepper motor driver manufactured by Sanken Electric. It combines control logic and power stages in a single unit, supporting 2-phase or 1-2 phase excitation with a built-in sequencer. The device utilizes Power MOSFET technology and features four low-side outputs. It operates on a supply voltage of 3V to 5.5V and supports load voltages from 10V to 44V. The output current capability is 3A, and it functions within a junction temperature range of -20°C to 150°C. The component is housed in a 23-ESIP molded lead package designed for through-hole mounting.

Feature Summary

• Fully integrated design combining control logic and power stages
• Built-in sequencer supporting 2-phase and 1-2 phase excitation
• Power MOSFET technology with four low-side outputs

Applications

• Unipolar stepper motor control systems
• General purpose motor driver applications
• Electromechanical actuator control

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as SLA7073MS LF2151 exist within the same series. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the 23-ESIP package dimensions align with the target PCB layout. Check for any product change notices or obsolescence announcements from the manufacturer prior to finalizing procurement plans.

Selection Notes

Select this component for applications requiring a compact solution for driving unipolar stepper motors without external logic chips. The integrated sequencer simplifies interface requirements by accepting parallel inputs. Verify that the system load voltage remains within the 10V to 44V range and that the peak current does not exceed the 3A rating. Consider the thermal performance given the wide operating temperature range up to 150°C TJ.

Part Context

The SLA7073MR belongs to the SLA707xM series of 2-phase unipolar stepper motor drivers produced by Sanken Electric. This family of ICs is designed to simplify motor control circuitry by integrating necessary drive and sequencing functions. The series typically covers various pin configurations and electrical ratings to suit different motor sizes and application constraints within the unipolar drive domain.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The related variant SLA7073MS LF2151 shares similar characteristics but may differ in packaging or revision details. Consult official Sanken Electric resources for cross-reference information before substituting.