Power Over Ethernet IC by Skyworks Solutions (14 more products)

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SI3474B-IM Image

The SI3474B-IM from Skyworks Solutions is a Programmable, Octal-Port Power-Over-Ethernet Controller that has been designed for IEEE 802.3af, 802.3at, and 802.3bt power sourcing equipment (PSE), switches, IP phone systems, smart grid switches, and ruggedized and industrial switches. This PSE controller requires a DC supply of 3-3.6 V and a supply current of up to 25 mA. It benefits from emergency shutdown support with a port priority control and has a maskable interrupt pin. This PoE controller comprises of programmable power MOSFET gate drive control, a configurable watchdog timer that enables failsafe operation, and per-port current and voltage monitoring. It features a comprehensive fault protection circuitry that includes power under voltage lockout (UVLO), output current limiting function, short-circuit protection (SCP), and thermal over-load detection to prevent over-current or over-heating-related damages. This RoHS-compliant PoE controller is available in a surface-mount package that measures 8 x 8 mm.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
    Skyworks Solutions
  • Description
    Programmable Octal-Port PoE Controller IC


  • Number of Ports
  • Input Voltage
    3 to 3.6 V
  • Output Current
    25 mA
  • Output Power
    90 W
  • Communication Standards
    IEEE 802.3at, IEEE 802.3af, IEEE 802.3bt
  • RoHS Compliant
  • Temperature Operating Range
    -40 to 85 Degree C
  • Industry
  • Applications
    Power over Ethernet Switches, IP Phone Systems, Ruggedized and Industrial Switches
  • Dimension
    8 x 8 mm
  • Package Type
    Surfac Mount
  • Package

Technical Documents