SI3453C-B02-GMR

Overview

The SI3453C-B02-GMR is a four-channel Power over Ethernet (PoE) controller manufactured by Skyworks Solutions Inc. Designed as a Powered System Entity (PSE), it complies with IEEE 802.3af and 802.3at standards. The device supports a supply voltage range of 45V to 57V and delivers a maximum power output of 40W per channel. It features internal switches and operates within a temperature range of -40°C to 85°C. The component is housed in a 40-QFN package measuring 6x6 mm.

Feature Summary

• Four independent PoE channels supporting 802.3af and 802.3at protocols
• Integrated internal switches for direct port control
• Compliant with IEEE standard classification and detection mechanisms

Applications

• Multi-port PoE switch implementations
• Power sourcing equipment for network infrastructure
• Industrial Ethernet controllers requiring high channel density

Procurement Notes

Verify component status carefully, as the related SI3453C-B01-GM variant is explicitly marked obsolete. Confirm availability through authorized distributors or check for official replacement part numbers such as the TPS2384PAP from Texas Instruments. Ensure the specific B02 suffix matches design requirements before ordering.

Selection Notes

Select this controller for designs requiring four isolated PoE ports with integrated switching capabilities. It is suitable for applications needing compliance with both legacy 802.3af and higher-power 802.3at standards. Consider the 40-QFN footprint for space-constrained PCB layouts.

Part Context

This component belongs to the Skyworks SI3453 family of PoE controllers. It serves as a central management unit for powering remote devices over Ethernet cabling. The series is designed to simplify system design by integrating classification, detection, and power delivery logic into a single IC.

Replacement Considerations

The TI TPS2384PAP is listed as a similar alternative. Verify pin compatibility and feature parity before substitution.