LV8773-E

Overview

The LV8773 is a Bi-CMOS LSI PWM constant-current control stepping motor driver manufactured by ON Semiconductor. It integrates a 2-channel H-bridge capable of driving brushed DC and stepping motors with forward, reverse, brake, and standby functions. The device supports pulse-width modulation for precise current regulation and includes built-in protection mechanisms such as thermal shutdown and under-voltage lockout to ensure reliable operation in office equipment and amusement applications.

Feature Summary

• Integrates a dual-channel H-bridge driver supporting forward, reverse, brake, and standby motor operations
• Features PWM constant-current control for accurate stepping motor drive performance
• Includes internal protection circuits against over-temperature and low voltage conditions

Applications

• Stepping motor drivers for office equipment
• Brushed DC motor control in amusement devices
• Motion control systems requiring bidirectional rotation and braking

Procurement Notes

Verify the specific suffix code on the component marking to confirm package type and temperature grade. Ensure the ordering number matches the exact variant required for your design, as pinouts or electrical characteristics may vary between revisions. Cross-reference the manufacturer's latest datasheet to confirm RoHS compliance status and recommended operating conditions before finalizing procurement.

Selection Notes

Select this component when designing systems that require integrated H-bridge control with PWM current regulation for stepping motors. It is suitable for applications needing compact solutions with built-in safety features like thermal shutdown. Consider the supply voltage range and maximum output current capabilities relative to the motor specifications to ensure adequate headroom and efficiency during continuous operation.

Part Context

This part belongs to the LV8773 series of Bi-CMOS LSI drivers designed for motion control. It is commonly used in consumer electronics where space constraints and functional integration are critical. The device simplifies motor control circuitry by combining power switching and logic control into a single IC, reducing the component count compared to discrete solutions.

Replacement Considerations

Check for direct substitutes within the same family or compatible H-bridge drivers with similar pinouts and current ratings. Verify that alternative components support the required PWM frequency and voltage levels. Ensure any replacement maintains the same protection features and package dimensions for board compatibility.