LB11876-MPB-E

Overview

The LB11876-MPB-E is a two-phase brushless DC (BLDC) motor driver manufactured by onsemi. It integrates commutation control and direction management for fan applications. The device operates within a supply voltage range of 6 V to 50 V, with a maximum output current of 1 A per phase. Power dissipation is rated at 800 mW. It functions within an operating temperature range of -30°C to +80°C. The component utilizes an MFP-14S surface-mount package.

Feature Summary

• Integrates commutation logic and direction control for two-phase BLDC motors
• Supports direct interface with microcontrollers or logic gates
• Includes protection features against overcurrent and thermal overload

Applications

• Computer cooling fans
• Server chassis ventilation systems
• Industrial equipment cooling modules

Procurement Notes

This component is officially discontinued and listed as obsolete by the manufacturer. Availability is restricted to existing stock or secondary market channels. Verify part authenticity carefully due to potential counterfeits in the aftermarket. Confirm RoHS compliance status through official documentation before integration into new designs.

Selection Notes

Select this driver for legacy system maintenance or replacement of end-of-life components. Ensure the application requires two-phase BLDC control rather than three-phase alternatives. Verify that the MFP-14S package footprint matches the PCB design constraints. Consider pinout compatibility when substituting into existing assemblies.

Part Context

Part of the LB1867M series from onsemi, designed for low-power fan motor control. The series focuses on integrated solutions combining power stages with control logic. This specific model targets cost-sensitive applications requiring reliable brushless motor operation without external microcontroller complexity.

Replacement Considerations

No public confirmed substitute part numbers are available for this discontinued component. Engineers must evaluate mechanical and electrical compatibility if sourcing alternative drivers. Cross-reference pinouts and control signals carefully.