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PD77728
  • PD77728

PD77728

In Production

The PD77728 device is a part of Microchip’s seventh generation IEEE® 802.3bt compliant Power over Ethernet (PoE) Power Sourcing Equipment (PSE) family. This device is a fully integrated 8-port PoE manager with integrated Field Effect Transistor (FET) switches and current sense resistors. Up to 12 devices can be cascaded to provide 48 4-pair ports when used with the PD77020 PoE Controller.The PD77728 based PSE has the following typical applications:Switches and routers for enterprise, small and medium business, SOHO, and commercial marketsSwitches for lighting marketPoE injectors...

Microchip Technology PD77728 Product Info

16 April 2026 2

Parameters

2-Pair Power

47.5W

4-Pair Power

95W

FETs

Internal

Host Interface

I2C

Maximum Current

1.185A

Operating Temperature

–40 °C to 85 °C

PoE Class

0-8

PoE Controller

PD77020

PoE Type (1-4)

1-4

Ports

8

Product Type

PSE Manager

Sense Resistor

Internal

Standards Supported

IEEE 802.3bt

Temperature Grade

Industrial

Features

  • IEEE 802.3bt compliant
  • Supports multiple PD Types - IEEE standard and legacy PDs
  • Supports multiple operational modes
  • Controller mode supported with PD77020 PoE Controller
  • Per-Port integrated FET, sense resistor, and port diode
  • Total port resistance of 160 mOhm
  • Device power dissipation ≤ 2W at full load
  • Surge up to 2 kV without additional components
  • Ambient temperature range –40 °C to 85 °C
  • 56-pin 8 mm × 8 mm QFN package with thermal pad
  • MSL3, RoHS compliant

    • Description

    The PD77728 device is a part of Microchip’s seventh generation IEEE® 802.3bt compliant Power over Ethernet (PoE) Power Sourcing Equipment (PSE) family. This device is a fully integrated 8-port PoE manager with integrated Field Effect Transistor (FET) switches and current sense resistors. Up to 12 devices can be cascaded to provide 48 4-pair ports when used with the PD77020 PoE Controller.

    The PD77728 based PSE has the following typical applications:

    • Switches and routers for enterprise, small and medium business, SOHO, and commercial markets
    • Switches for lighting market
    • PoE injectors

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