SLA7071MR

Overview

The SLA7071MR is a two-phase unipolar stepper motor driver integrating low-power CMOS logic with high-current, high-voltage power FET outputs. It provides complete control and drive for stepper motors within a Power Multi-Chip Module (PMCM). The device supports full- and half-step operation with externally selectable sequencing. Key electrical parameters include a maximum motor supply voltage of 44V, a load supply range of 10V to 44V, and a logic supply voltage of 3V to 5.5V. The NMOS outputs can sink up to 2A and withstand 46V in the off state.

Feature Summary

• Integrates CMOS sequencing logic with high-current power MOSFET outputs for complete motor control
• Features internal fixed off-time and pulse-width modulation (PWM) current control
• Supports external selection of full-step and half-step excitation modes
• Includes clamp diodes for protection against inductive transients

Applications

• Printers
• Office Automation Equipment
• Point of Sale Systems

Procurement Notes

Verify component authenticity through authorized Sanken Electric distributors or certified partners. Confirm that the specific suffix matches the required package and temperature grade. Check for recent product change notices regarding manufacturing updates. Ensure compliance with RoHS standards if required by the target application environment.

Selection Notes

Select this driver when a single-chip solution for unipolar stepper motors is required. It is suitable for applications lacking complex microprocessors due to its integrated sequencing logic. Choose based on the required output current capability and the available logic supply voltage range. Consider the thermal performance of the PMCM package for the specific enclosure design.

Part Context

This component belongs to the SLA707xM series of two-phase unipolar stepper motor drivers. The series combines logic and power stages to simplify system design. The MR suffix typically denotes a specific package variant within the Sanken lineup. These drivers are designed to replace discrete transistor solutions in compact electronic devices.

Replacement Considerations

SLA7070MR

FAQ

How is the step mode selected?

Full-step and half-step operations are externally selectable via specific input pin configurations.

What is the maximum output current?

The NMOS outputs are capable of sinking up to 2A depending on the specific device rating within the series.