SI3472A-A01-IM

Overview

The SI3472A-A01-IM is a Power Sourcing Equipment (PSE) controller designed for IEEE 802.3bt Type 2 applications. It supports four Ethernet ports with a total output power of 90 W. The device integrates an efficient DC/DC controller and features external FETs to optimize thermal performance and cost. It operates within a supply voltage range of 2.7 V to 57 V and functions reliably between -40°C and +85°C.

Feature Summary

• Supports IEEE 802.3bt Type 2 PoE standards for high-power delivery
• Integrates DC/DC control for efficient power management
• Utilizes external FETs to enhance thermal dissipation

Applications

• High-power PoE endpoint devices
• Industrial IoT gateways
• Smart building infrastructure controllers

Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm package type and tape/reel specifications. Ensure compatibility with required external components for the 90W configuration. Confirm RoHS compliance status through the manufacturer's current datasheet before finalizing procurement orders.

Selection Notes

Select this component for designs requiring multi-port PoE++ integration with centralized power management. Evaluate thermal requirements carefully as the design relies on external FETs for heat dissipation. Compare against single-port alternatives if lower port density suffices for the target application architecture.

Part Context

This part belongs to the Si347x family of PoE PSE controllers from Skyworks Solutions. These devices are engineered to simplify the addition of compatible PoE to existing Ethernet ports while balancing performance and manufacturing costs.

Replacement Considerations

Consult official Skyworks substitution guides for verified equivalents. Generic cross-references may not match the integrated DC/DC controller or specific 802.3bt Type 2 timing requirements.