LB1909MC-BH

Overview

The onsemi LB1909MC-BH is a bipolar stepper motor driver featuring dual full-bridge outputs in a surface-mount SOIC package. It operates within a supply voltage range of 2.5 V to 7.5 V and supports a maximum collector current of 0.8 A. The device integrates control and power stages for efficient motor management. It functions reliably across an operating temperature range from -20 °C to +75 °C, providing a compact solution for driving bipolar stepper motors in space-constrained applications.

Feature Summary

• Dual full-bridge output configuration designed specifically for bipolar stepper motor control
• Integrated driver architecture combining control logic and power stages
• Surface-mount packaging optimized for automated assembly and reduced footprint

Applications

• Bipolar stepper motor drive systems
• Compact electromechanical actuators
• Precision positioning equipment

Procurement Notes

Verify the specific suffix 'BH' against official documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status and lead-free specifications with the manufacturer or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when a low-voltage (up to 7.5 V) bipolar stepper motor driver is required. Ensure the application current does not exceed 0.8 A per bridge. Consider the -20 °C to +75 °C operating range against environmental conditions.

Part Context

This part belongs to onsemi's motor driver portfolio, categorized under power management solutions. It complements other integrated motor control devices by offering a dedicated, cost-effective driver for standard bipolar stepper motors without requiring external power transistors.

Replacement Considerations

Consult official substitution guides for equivalent bipolar stepper drivers. Verify compatibility regarding supply voltage limits, current ratings, and package dimensions before replacing.