SI3472B-A01-IM

Overview

The SI3472B-A01-IM is a Power Sourcing Equipment (PSE) controller manufactured by Skyworks Solutions, designed for IEEE 802.3bt compliant PoE applications. It supports four Ethernet ports and delivers up to 90W of power per port. The device integrates an external FET driver to enhance thermal performance and optimize the cost-to-performance ratio. Operating within a temperature range of -40°C to +85°C, it utilizes a QFN-56 package suitable for surface mount technology.

Feature Summary

• Supports full IEEE 802.3bt PoE standards with high power delivery capabilities
• Integrates control logic for four independent Ethernet ports
• Features external FET driver architecture for improved thermal management

Applications

• High-power PoE endpoint devices requiring 802.3bt compliance
• Enterprise network infrastructure equipment
• Outdoor access points and surveillance cameras with elevated power demands

Procurement Notes

Verify that the specific suffix 'A01' matches the required firmware or hardware revision for your design. Confirm the QFN-56 package dimensions against your PCB footprint. Ensure the Bill of Materials includes compatible external field-effect transistors as this component functions as a controller rather than a standalone switch.

Selection Notes

Select this model when designing systems requiring four-channel PoE++ support. Consider the external FET configuration if thermal dissipation is a primary constraint. Evaluate the integration benefits against discrete solutions to determine if the integrated controller approach meets the system's size and efficiency targets.

Part Context

This component belongs to the Si347x series of PoE controllers from Skyworks Solutions. The series provides scalable solutions for various PoE standards, ranging from standard 802.3af/at to high-power 802.3bt implementations. These controllers are engineered to simplify the addition of PoE functionality to existing Ethernet infrastructure while maintaining strict regulatory compliance.

Replacement Considerations

The SI3472A-A01-IM is a documented substitute within the same product family. Verify if the functional differences between the A and B variants align with the specific requirements of the target application.