SI3453-B02-GM

Overview

The SI3453-B02-GM is a four-channel Power over Ethernet (PoE) controller manufactured by Skyworks Solutions Inc. It functions as a Powered System Equipment (PSE) controller compliant 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-VFQFN package with dimensions of 6x6 mm.

Feature Summary

• Four independent PoE channels supporting 802.3af and 802.3at standards
• Integrated internal switches for direct port connection
• Compliant with IEEE classification protocols for power negotiation

Applications

• Industrial control systems
• Security camera networks
• Wireless access points
• Smart building management infrastructure

Procurement Notes

Verify component status carefully, as the SI3453 family has been marked obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or secondary markets. Ensure that any sourced units are genuine and match the specific suffix requirements for your design. Cross-reference replacement options if long-term supply stability is required for production.

Selection Notes

Select this controller for designs requiring multi-port PoE+ power delivery with integrated switching capabilities. It is suitable for applications needing compliance with both 802.3af and 802.3at specifications. Consider the 40-QFN package constraints during PCB layout. Evaluate thermal management requirements given the 40W maximum power rating per channel and the operating temperature range limits.

Part Context

This component belongs to the Skyworks SI3453 series of PoE controllers. It is designed to provide power and data transmission over standard Ethernet cabling. The series includes variants such as SI3453A and SI3453D, which may differ in specific electrical characteristics or packaging options while maintaining core functionality.

Replacement Considerations

The TPS2384PAP from Texas Instruments is listed as a similar alternative part number.