LS8397

Overview

The LS8397 is a stepper motor controller designed to generate four-phase drive signal outputs for controlling two-phase bipolar and four-phase unipolar motors. It serves as a low-cost, low-current replacement for the L297, offering pin-compatible functionality with added features such as selectable torque ripple compensation modes.

Feature Summary

• Generates four-phase drive signals for bipolar and unipolar stepper motors
• Provides selectable torque ripple compensation mode
• Functions as a pin-compatible replacement for L297 controllers

Applications

• Stepper motor control systems
• Bipolar motor driving applications
• Unipolar motor driving applications

Procurement Notes

Verify the specific suffix (e.g., -S, -TS) against your bill of materials, as these may indicate package variations or temperature ranges. Confirm compatibility with existing L297-based designs if used as a drop-in replacement. Ensure voltage and current ratings match your motor specifications before integration.

Selection Notes

Select this component when a low-cost, low-current solution for stepper motor commutation is required. It is suitable for designs needing torque ripple compensation without complex external circuitry. Consider it for upgrades from L297-based systems requiring pin compatibility.

Part Context

LSI/CSI produces standard and custom ICs, including motor controllers. The LS8397 belongs to their line of stepper motor control devices, focusing on cost-effective solutions for industrial and consumer applications requiring precise motor positioning.

Replacement Considerations

The LS8397 is documented as a direct replacement for the L297. Verify pinout compatibility and electrical characteristics to ensure seamless integration into existing L297 designs.