SI3474A-A02-IMR

$4.04

Description：IEEE 802.3BT FOUR ETHERNET PORT
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tape & Reel (TR)

SKU:3744351e8d7d Category: Power Over Ethernet (PoE) Controllers Brand: Skyworks Solutions Inc.

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Product introduction

Product Detailed Parameters

Description：IEEE 802.3BT FOUR ETHERNET PORT
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tape & Reel (TR)
Type：Controller (PSE)
Number of Channels：4
Power - Max：-
Internal Switch(s)：Both
Auxiliary Sense：No
Standards：802.3at (PoE+), 802.3af (PoE), 802.3bt
Voltage - Supply：50V ~ 57V
Current - Supply：17mA
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：56-VFQFN Exposed Pad
Supplier Device Package：56-QFN (8x8)

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SI3474A-A02-IMR

Overview

The SI3474A-A02-IMR is a Power Sourcing Equipment (PSE) controller designed for IEEE 802.3bt compliant PoE applications. It supports four Ethernet ports with a total output power capacity of 90W. The device integrates current sensing capabilities, featuring an internal 255mΩ resistor for precise monitoring. Operating within standard industrial temperature ranges, it facilitates efficient power delivery in network infrastructure environments requiring high-density PoE solutions.

Feature Summary

Supports four independent Ethernet ports for simultaneous PoE power distribution
Complies with IEEE 802.3bt standards for high-power classification
Integrates internal current sense resistor for accurate port monitoring

Applications

High-density PoE switch deployments
Network infrastructure powering for 802.3bt endpoints
Centralized power sourcing equipment systems

Procurement Notes

Verify the specific suffix A02 against official Skyworks documentation to confirm internal component variations. Ensure compatibility with required PCB footprint and thermal management specifications. Confirm moisture sensitivity level handling procedures during assembly. Cross-reference the datasheet for exact pinout and electrical characteristics before integration.

Selection Notes

Select this controller for designs requiring integrated four-port 802.3bt PSE functionality. Consider the internal 255mΩ resistor when designing external compensation networks. Evaluate thermal dissipation requirements given the 90W total power capability. Ensure the application environment supports the specified operating temperature range.

Part Context

This component belongs to the SI3474 series of PoE LAN controllers. It serves as a specialized power management solution for network switches. The device simplifies design by integrating multiple PSE functions into a single package. It targets modern networking equipment needing robust and standardized power delivery.