LM5050Q0MKX-1/NOPB

Overview

The LM5050Q0MKX-1/NOPB is an N+1 ORing controller manufactured by Texas Instruments, designed for redundant power supply applications. It operates with external N-channel MOSFETs to replace diode rectifiers in power distribution networks, significantly reducing conduction losses and voltage drops. The device supports input voltages from 5V to 75V and withstands transient voltages up to 100V. Key electrical parameters include a quiescent current of 400µA, a maximum continuous current limit of 1A, and an operating temperature range of -40°C to +125°C. It is housed in a SOT-23-THIN-6 package.

Feature Summary

• Provides gate drive for external N-channel MOSFETs to function as ideal diodes
• Features fast response comparator to block reverse current flow
• Includes integrated charge pump for efficient high-side switching
• Supports N+1 redundancy configurations for critical power systems

Applications

• Redundant power supply architectures
• High-efficiency power distribution networks
• Industrial equipment requiring fault isolation
• Automotive electronics systems

Procurement Notes

Verify the specific suffix 'Q0' against official Texas Instruments documentation to confirm automotive qualification status and exact pinout compatibility. Ensure the ordering part number matches the required tape-and-reel quantity specifications. Cross-reference the datasheet revision history for any updates to electrical characteristics or mechanical dimensions prior to final procurement.

Selection Notes

Select this component when low forward voltage drop and high efficiency are prioritized over simple diode solutions. It is suitable for systems requiring active load sharing among multiple power sources. Consider the external MOSFET selection carefully to match the controller's drive capabilities and thermal requirements within the specified operating temperature range.

Part Context

This part belongs to the LM5050 family of ORing controllers, which are specialized PMICs for managing parallel power inputs. The LM5050 series enables designers to implement ideal diode functionality using discrete MOSFETs, offering superior performance compared to standard Schottky or PN junction diodes in terms of power loss and heat generation.

Replacement Considerations

Public confirmed substitute part numbers: LM5050MKX-1/NOPB.