MP8005DF-LF

Overview

The MP8005DF-LF-Z is a Powered Device (PD) interface and PWM controller compliant with IEEE 802.3af standards, designed for 13W Power over Ethernet applications. It operates within a supply voltage range of 0 V to 57 V and features a maximum on-resistance of 1.2 Ohms. The device limits input current to 400 mA and delivers up to 13 W of output power. It functions reliably across an operating temperature range of -40°C to +85°C. With a maximum duty cycle of 86% and a quiescent current of 240 uA, it is housed in a TSSOP-20 package suitable for surface mount installation.

Feature Summary

• Integrates PD interface logic with PWM control for efficient PoE power delivery
• Supports standard-compliant powered device classification and detection
• Provides internal current limiting to protect downstream circuitry

Applications

• IEEE 802.3af compliant network endpoints
• Power over Ethernet powered devices
• LAN interface power management systems

Procurement Notes

Verify the specific suffix LF-Z against official Monolithic Power Systems documentation to confirm lead-free status and tape-and-reel packaging configuration. Ensure compatibility with your board's thermal design for the TSSOP-20 package. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and lifecycle status before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring strict adherence to IEEE 802.3af specifications for 13W power budgets. The integrated PWM controller simplifies design by combining interface logic with power regulation. Consider the 1.2 Ohm on-resistance for efficiency calculations and ensure the TSSOP-20 footprint matches your PCB layout constraints.

Part Context

This component belongs to the MP8005 series from Monolithic Power Systems, specialized for Power over Ethernet solutions. It serves as a critical interface between the LAN physical layer and the local power distribution network. The device enables efficient power extraction from Ethernet cables while maintaining signal integrity and compliance with networking standards.

Replacement Considerations

Consult MPS datasheets for direct pin-compatible alternatives within the same series. Verify that any substitute maintains identical 802.3af compliance and 13W power handling capabilities.