PD77728ILQ-0201-TR

Overview

The PD77728ILQ-0201-TR is a Power Sourcing Equipment (PSE) manager from Microchip Technology, designed for IEEE 802.3bt Type 4 PoE applications. It integrates eight PoE ports with built-in switches and power monitors. The device supports up to 12 units in a cascaded configuration to create systems with 48 PoE ports using all four pairs of Ethernet cables. It features integrated FETs, detection resistors, and port diodes per channel, with a total port resistance of 160 mΩ. Operating within an ambient temperature range of -40°C to +85°C, it utilizes a 56-pin QFN package measuring 8 mm x 8 mm with a thermal pad.

Feature Summary

• Fully integrated PSE manager compliant with IEEE 802.3bt standards
• Supports multiple Powered Device types including standard and legacy classifications
• Contains integrated field-effect transistors, detection resistors, and port diodes for each port
• Capable of cascading up to twelve units to form extensive multi-port systems

Applications

• Enterprise network switches and routers
• Small-to-medium business and SOHO networking equipment
• Commercial and industrial lighting market PoE supplies
• High-density PoE management systems requiring extended port counts

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm firmware version and operational parameters. Confirm availability status as distribution channels may vary. Ensure compatibility with existing system designs regarding voltage ranges and thermal requirements before integration.

Selection Notes

Select this component for designs requiring high-density PoE deployment with integrated switching capabilities. Consider the thermal performance characteristics given the power dissipation limits under full load. Evaluate the need for cascading multiple units if the application exceeds the single-chip port capacity.

Part Context

This part belongs to Microchip's dedicated PoE management series adhering to the latest IEEE standards. It serves as a core component for modern networking infrastructure, replacing discrete solutions with a highly integrated approach that simplifies board layout and reduces overall system complexity for manufacturers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.