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Si3472 - Octal or Quad 2-pair 802.3bt Ethernet Port PoE PSE Controller

Download the Si3472 datasheet PDF. This datasheet also covers the Si3473 variant, as both devices belong to the same octal or quad 2-pair 802.3bt ethernet port poe pse controller family and are provided as variant models within a single manufacturer datasheet.

General Description

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Key Features

  • include powered device (PD) disconnect using dc-sense algorithms, a robust multipoint detection algorithm, software configurable per-port current and voltage monitoring, and programmable current limits to support the IEEE 802.3af, 802.3at, and 2-pair 802.3bt standards. Intelligent power protection circuitry includes input undervoltage detection, output power limit, and short-circuit protection. The Si3473/72 operates autonomously or by host processor control through a two wire, I2C-compatible se.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (Si3473-Skyworks.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number Si3472
Manufacturer Skyworks Solutions
File Size 1.04 MB
Description Octal or Quad 2-pair 802.3bt Ethernet Port PoE PSE Controller
Datasheet download datasheet Si3472 Datasheet

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Other Datasheets by Skyworks Solutions

Part Number Description
Si3471 Autonomous Single Ethernet Port IEEE 802.3bt PoE PSE
Si3473 Octal or Quad 2-pair 802.3bt Ethernet Port PoE PSE Controller
Si3474 Ethernet Port PoE PSE Controllers
Si3404 1-Compliant POE PD Interface and High-Efficiency Switching Regulator
Si34061 POE+ PD Interface & Switching Regulators

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Si3473/72 Data Sheet Octal or Quad 2-pair 802.3bt Ethernet Port PoE PSE Controller The Si3473 and Si3472 are fully programmable, 50 V to 57 V power sourcing equipment (PSE) controllers for IEEE 802.3bt 2-pair, Type 3 applications. As 2-pair, Type 3 PSE controllers, Si3473/72 are compatible with IEEE 802.3af and IEEE 802.3at powered device (PD) loads. Designed for use in PSE endspans (switches) and midspans (injectors), the Si3473/72 integrates eight (Si3473) or four (Si3472) independent ports, each with the IEEE-required detection and classification functionality.