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PD39208
  • PD39208

PD39208

In Production

The PoE manager IC integrates power, analog, and state-of-the-art logic into a single 56-pin, plastic QFN package. The device is used in Ethernet switches and midspans to allow network devices to share power and data over the same cable. The PD39208 device is an 8-port, mixed-signal, and high-voltage PoE driver. Together with the PD39210 external MCU, it performs as a PSE system designed specifically to support the IEEE 802.3at standard. The PD39208 supports supply voltages between 32V and 57V without additional power supply sources. An on-going monitoring of system parameters for the host software is available via system communication. Internal thermal protection is implemented in the chip. PD39208 is a low-power dissipation device that uses internal MOSFETs and internal 100 m&O...

Microchip Technology PD39208 Product Info

16 April 2026 0

Parameters

Product Type

PSE Manager

Standards Supported

IEEE 802.3af, IEEE 802.3at

Ports

8

2-Pair Power

35.7W

4-Pair Power

NA

Maximum Current

0.620A

PoE Class (0-8)

0-4

PoE Type (1-4)

1-2

FETs

Internal 0.2 Ohm

Sense Resistor

Internal 0.1 Ohm

Operating Temperature

-40 to 85

PoE Controller

PD39210

Host Interface

NA

Temperature Grade

Industrial

Features

  • Part of PD39210 + PD39208 chip set
  • 8 independent PoE channels
  • Complies with IEEE 802.3af and IEEE 802.3at
  • Drives 2-pair power port
  • Single DC voltage input (32V to 57V) w/ built in 3.3V and 5V regulators
  • Input voltage out of range protection, voltage monitoring / protection
  • Wide ambient temperature range: -40°C to +85°C
  • On-chip over-temperature thermal protection and monitoring
  • Low power dissipation (0.1ohm sense resistor and 0.2ohm MOSFET Rdson per channel)
  • Power soft start mechanism, Internal power on reset
  • Can cascade up to six (6) PoE devices (48 physical 2-pair ports)
  • Detailed port status
  • Programmable threshold temperature alarm limit
  • Interrupt out pin for system and port events
  • Forced port power ON function
  • Port power limit setting, port matrix and priority
  • 56-pin, 8 mm x 8 mm QFN package

    • Description

    The PoE manager IC integrates power, analog, and state-of-the-art logic into a single 56-pin, plastic QFN package. The device is used in Ethernet switches and midspans to allow network devices to share power and data over the same cable. The PD39208 device is an 8-port, mixed-signal, and high-voltage PoE driver. Together with the PD39210 external MCU, it performs as a PSE system designed specifically to support the IEEE 802.3at standard. The PD39208 supports supply voltages between 32V and 57V without additional power supply sources. An on-going monitoring of system parameters for the host software is available via system communication. Internal thermal protection is implemented in the chip. PD39208 is a low-power dissipation device that uses internal MOSFETs and internal 100 mΩ sense resistors. PD39208 is available in a 56 pin, 8 mm x 8 mm QFN package.

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