LB1940T-MPB-E

Full Half-Bridge (H Bridge) Drivers Overview

The LB1940T-MPB-E is a monolithic digital integrated circuit featuring a dual-channel H-bridge constant current driver. Manufactured by onsemi, this component is designed for precise motor control applications requiring stable current regulation. It integrates two independent H-bridge outputs capable of delivering up to 400mA per channel, making it suitable for driving bipolar stepper motors and DC motors in compact electronic systems.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Dual-channel H-bridge architecture enabling independent control of two motor loads
• Integrated constant current control mechanism for stable motor operation
• Compact TSSOP-20 package design optimized for space-constrained PCB layouts

Full Half-Bridge (H Bridge) Drivers Applications

• Bipolar stepper motor control systems
• DC motor drive circuits
• General purpose motor control applications

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix MPB-E against the official onsemi datasheet to confirm pinout compatibility and thermal specifications. Ensure the procurement source provides valid traceability documentation. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components. Confirm that the requested quantity aligns with standard packaging configurations defined in the product specification.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when designing systems requiring dual-motor actuation with constant current regulation. The TSSOP-20 package offers a balance between thermal performance and footprint efficiency. Consider the 400mA output capability relative to the connected motor's rated current. Evaluate the operating temperature range to ensure suitability for the intended environmental conditions.

Full Half-Bridge (H Bridge) Drivers Part Context

This device belongs to the LB1940T family of motor drivers from onsemi. It serves as a specialized solution for embedded motor control tasks. The series includes variants such as the LB1940T-TLM-H, which shares similar functional characteristics but may differ in packaging or specific electrical ratings. These drivers are commonly utilized in industrial automation and consumer electronics.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

The LB1940T-TLM-H is a documented variant within the same family. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. Other potential replacements include the LV8080LP, though architectural differences require careful schematic review.