SLA7073MS LF2151

Overview

The SLA7073MS is a monolithic integrated circuit designed as a driver for two-phase unipolar stepper motors. Manufactured by Sanken Electric, this component integrates power output stages and control logic to manage motor phases directly from low-voltage digital signals. It supports full-step, half-step, and microstep driving modes, offering precise position control. The device features built-in protection mechanisms including overcurrent shutdown and thermal shutdown to ensure reliable operation under varying load conditions.

Feature Summary

• Integrates dual H-bridge output stages for direct drive of two-phase unipolar stepper motors
• Supports multiple stepping modes including full-step, half-step, and microstep configurations
• Includes internal protection circuits for overcurrent detection and thermal overload prevention

Applications

• Office automation equipment such as printers and copiers
• Industrial positioning systems requiring precise angular control
• Automotive actuator applications for valve or seat adjustment

Procurement Notes

Verify the specific suffix LF2151 against official Sanken Electric documentation to confirm it denotes a standard tape-and-reel packaging variant rather than a functional modification. Ensure the ordering part number matches the exact electrical specifications required for your design. Cross-reference with the latest datasheet revision to confirm pinout compatibility and recommended operating conditions before finalizing procurement.

Selection Notes

Select this component when designing systems that require integrated control and power driving for unipolar stepper motors without external discrete transistors. It is suitable for applications needing compact solutions with built-in safety features. Consider the package thermal performance and supply voltage range relative to the motor coil requirements. Evaluate if the integrated microstepping capability meets the resolution needs of the application.

Part Context

The SLA7073MS belongs to the SLA7070M(P)R through SLA7078M(P)R family of 2-phase unipolar stepper motor drivers published by Sanken Electric Co., Ltd. This series provides a standardized interface for controlling stepper motors in various electromechanical devices. The family shares common architectural features while differing in specific current ratings or feature sets across variants.

Replacement Considerations

Consult the official Sanken Electric replacement guide for verified substitute part numbers within the same product line. Direct replacements must match the pin configuration and electrical characteristics to ensure compatibility.