MP8008LGV-Z

Overview

The MP8008LGV-Z is a fully integrated IEEE 802.3af/at-compatible Power over Ethernet (PoE) Powered Device (PD) interface with an integrated peak-current-mode flyback controller, manufactured by Monolithic Power Systems. It combines PD interface functions and power conversion in a single QFN-28 package. The device supports detection, classification, surge current limiting, and operating current limiting as per standard specifications. It features a 100V hot-swap MOSFET and drives an external high-current MOSFET for the flyback converter. The controller includes protection mechanisms such as overload, short circuit, overvoltage, and overtemperature protection, ensuring reliable operation in PoE applications.

Feature Summary

• Fully integrated 802.3af/at compatible PoE PD interface with built-in peak-current-mode flyback controller
• Includes 100V hot-swap MOSFET and 12V/1A gate driver for external power stage
• Supports auxiliary adapter powering and Type-2 PSE indication
• Comprehensive protection suite including overload, short circuit, overvoltage, and overtemperature protection

Applications

• IEEE 802.3af/at compliant PoE powered devices
• High-performance flyback PoE applications requiring integrated front-end solution
• Network equipment powered via Ethernet cables
• IoT devices utilizing Power over Ethernet for simultaneous data and power delivery

Procurement Notes

Verify the specific suffix 'LGV' against official MPS documentation to confirm exact electrical characteristics and availability status, as distributor listings may vary. Confirm RoHS compliance and moisture sensitivity levels prior to assembly. Ensure the QFN-28 package dimensions match your PCB footprint requirements. Cross-reference the part number with the latest datasheet revision to ensure all functional parameters are current.

Selection Notes

Select this component when a compact, fully integrated solution for PoE PD applications is required. It eliminates the need for separate PD interface and flyback controller ICs, reducing bill of materials and board space. Suitable for designs needing robust protection features and support for both 802.3af and 802.3at standards. Consider the thermal performance of the QFN-28 package in relation to the expected power dissipation in your specific application environment.

Part Context

The MP8008 series from Monolithic Power Systems represents a family of integrated PoE PD controllers. The MP8008LGV-Z is a variant within this series, designed to simplify the design of PoE-powered endpoints. It integrates the necessary logic for PD negotiation and classification with the power conversion stage, offering a complete front-end solution for networked devices requiring power delivery over Ethernet infrastructure.

Replacement Considerations

Consult MPS official documentation for confirmed substitute part numbers. Verify compatibility with existing design constraints if replacing with other MP8008 variants or competitor parts.