SI3472B-A01-IMR

Overview

The SI3472B-A01-IMR is a quad-channel Power Sourcing Equipment (PSE) controller designed for IEEE 802.3bt Type 4 applications. It delivers up to 51W per port, supporting high-power devices such as PTZ cameras and access points. The device operates within a supply voltage range of 3V to 3.6V and functions reliably across an industrial temperature range of -40°C to +85°C. Packaged in a 38-VFQFN exposed pad, it integrates four independent channels with current limiting capabilities.

Feature Summary

• Supports IEEE 802.3bt Type 4 PoE++ standards for high-power delivery
• Integrates four independent power channels for multi-port deployments
• Includes internal protection mechanisms for safe operation

Applications

• High-powered IP cameras requiring Pan-Tilt-Zoom functionality
• Wireless access points with advanced antenna arrays
• Industrial IoT gateways and edge computing nodes

Procurement Notes

Verify the specific suffix IMR indicates the reel packaging configuration when ordering. Confirm that the 38-VFQFN package dimensions match your PCB footprint requirements. Ensure thermal management solutions are adequate for the maximum power dissipation expected in your application environment.

Selection Notes

Select this component for designs requiring four independent PoE ports with Type 4 compliance. It is suitable for systems needing higher power budgets than standard PoE+ controllers provide. Consider the QFN package for compact board layouts while ensuring proper soldering techniques for the exposed pad thermal connection.

Part Context

This part belongs to Skyworks' SI3472 series of PoE controllers. It complements lower-power variants like the SI3472A by offering increased power per channel. The series targets modern networking infrastructure where device power demands exceed traditional 802.3at limits.

Replacement Considerations

Check datasheets for SI3472A-A01-IMR if lower power per port is acceptable. Verify pin compatibility with SI3473B-A01-IMR if single-channel or different port counts are needed. Ensure any substitute supports the required 802.3bt Type 4 standard.