LB1973JA-ZH

Overview

The LB1973JA-ZH is a stepper motor driver IC manufactured by onsemi, designed for low-voltage applications. It features dual full-bridge outputs capable of driving up to 1A per channel. The device operates within a supply voltage range of 1.8V to 7.5V and supports a wide operating temperature range from -20°C to +85°C. Housed in a compact 16-pin SSOP package with dimensions of 5.2mm x 4.4mm x 1.3mm, it provides integrated control for bipolar stepper motors.

Feature Summary

• Dual full-bridge output configuration for direct bipolar stepper motor control
• Wide operating supply voltage range supporting low-power systems
• Compact surface-mount packaging suitable for space-constrained designs

Applications

• Bipolar stepper motor drive circuits
• Low-voltage automation equipment
• Portable electronic devices requiring precise motion control

Procurement Notes

Verify the specific suffix 'ZH' against official onsemi documentation to confirm exact ordering and availability details. Ensure compatibility with system voltage requirements and thermal management needs. Confirm package integrity and pinout alignment during integration. Cross-reference datasheet specifications for electrical limits before finalizing procurement decisions.

Selection Notes

Select this component when designing low-voltage stepper motor interfaces requiring integrated bridge drivers. Consider the 1A current limit and 1.8V minimum supply for battery-operated or low-power applications. Evaluate the SSOP package constraints for PCB layout and thermal dissipation requirements relative to the expected load conditions.

Part Context

This part belongs to onsemi's portfolio of motor driver solutions, specifically targeting stepper motor applications. It integrates power stages and control logic into a single package, simplifying design complexity compared to discrete solutions. The series typically offers robust protection features and ease of interface for microcontroller-based systems.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic equivalents may differ in current handling or voltage tolerance. Verify pin compatibility and functional equivalence before substitution.