SLA7077MR

Overview

The SLA7077MR is a monolithic integrated circuit designed as a driver for two-phase unipolar stepper motors, manufactured by Sanken Electric. It belongs to the SLA7070M(P)R through SLA7078M(P)R series released in February 2006. The device integrates power output stages and control logic to manage motor phases directly from low-voltage digital signals. It is engineered for applications requiring reliable stepping motion control with built-in protection mechanisms against thermal overload and supply voltage anomalies.

Feature Summary

• Integrates dual H-bridge output stages capable of driving two-phase unipolar stepper motors
• Includes internal protection circuits for overheat shutdown and undervoltage lockout
• Accepts standard TTL/CMOS compatible logic inputs for step and direction control

Applications

• Office automation equipment such as printers and copiers
• Industrial positioning systems and automated machinery
• Security systems including access control locks and surveillance cameras

Procurement Notes

Verify the specific suffix configuration against the official Sanken Electric datasheet to ensure compatibility with required packaging and temperature ratings. Confirm that the component meets all relevant safety and environmental standards applicable to your target market before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring direct drive for two-phase unipolar stepper motors without external power transistors. Ensure the application voltage and current requirements fall within the specified limits of the SLA7070M series family to guarantee proper operation and longevity of the integrated circuit.

Part Context

This part is part of the SLA7070M(P)R series of 2-phase unipolar stepper motor drivers produced by Sanken Electric Co., Ltd. The series was documented in February 2006. These ICs are designed to simplify motor control interfaces by combining logic and power stages into a single package, reducing board space and component count in motor control assemblies.

Replacement Considerations

Consult the official Sanken Electric documentation for confirmed substitute part numbers within the same product line or equivalent offerings from other manufacturers. Verify pin compatibility and electrical characteristics before substituting.