LM5050Q0MK-1/NOPB

Overview

The LM5050Q0MK-1/NOPB is a high-side OR-ing FET controller designed for automotive and industrial applications. It operates with an input voltage range of 5 V to 75 V and supports junction temperatures up to 150°C. The device features AEC-Q100 qualification and functional safety capabilities, making it suitable for redundant power systems. It controls external N-channel MOSFETs to provide ideal diode functionality, ensuring seamless power path management and reverse current blocking in hot-swap scenarios.

Feature Summary

• Provides high-side OR-ing control for redundant power supply configurations
• Supports operation at elevated junction temperatures up to 150°C
• Includes functional safety documentation for system-level reliability assessment

Applications

• Automotive redundant power distribution networks
• Hot-swap server power modules
• Industrial backup power switching systems

Procurement Notes

Verify the specific suffix and package variant against the official Texas Instruments datasheet to ensure compatibility with your design requirements. Confirm that the component meets all necessary automotive qualification standards if used in vehicle applications. Cross-reference the ordering information with the manufacturer's latest release notes to avoid discrepancies in pinout or thermal characteristics.

Selection Notes

Select this controller when designing systems requiring robust high-side switching with extended temperature tolerance. Ensure the external MOSFET selected can handle the expected load current and voltage ratings specified by the controller's gate drive capabilities. Consider the functional safety requirements of the application to determine if additional safety mechanisms are needed alongside this component.

Part Context

This part belongs to the LM5050 family of high-side OR-ing FET controllers from Texas Instruments. It is specifically qualified for automotive use under the Q0MK designation, indicating suitability for harsh environments. The family is designed to replace traditional diodes in power paths, reducing conduction losses and improving system efficiency through active control of external MOSFETs.

Replacement Considerations

LM5050Q1MK-1/NOPB is a confirmed substitute within the same family, offering similar functionality with a maximum junction temperature rating of 125°C.