SI3453B-B01-GM

Overview

The SI3453B-B01-GM is a Power over Ethernet (PoE) controller manufactured by Skyworks Solutions Inc. It supports four channels and complies with IEEE 802.3af (PoE) and 802.3at (PoE+) standards. The device operates within a supply voltage range of 45V to 57V and draws a supply current of 4mA. It features internal switches and delivers a maximum power output of 40W. The component is housed in a 40-VFQFN package with dimensions of 6x6 mm and includes an exposed pad. It is designed for surface mount installation and functions as a Powered System Entity (PSE).

Feature Summary

• Supports dual standard compliance for both 802.3af and 802.3at PoE protocols.
• Integrates four independent control channels for multi-port applications.
• Includes internal switching elements to simplify external circuit design.
• Operates reliably across industrial temperature ranges from -40°C to 85°C.

Applications

• Multi-port PoE powered system entity designs
• IEEE 802.3af compliant network infrastructure equipment
• IEEE 802.3at compliant high-power networking devices

Procurement Notes

Verify the obsolete status of this component before integration, as it may no longer be in active production. Confirm that the 40-QFN package dimensions match your PCB footprint requirements. Ensure compatibility with existing 802.3af and 802.3at system architectures. Check for available replacement parts if long-term supply stability is required for the product lifecycle.

Selection Notes

Select this controller for designs requiring integrated four-channel PoE management under IEEE standards. The internal switch capability reduces bill of materials complexity compared to discrete solutions. Consider the 40-VFQFN package size when determining board space allocation. Verify thermal performance capabilities given the 40W maximum power rating and operating temperature range constraints.

Part Context

This component belongs to the Skyworks SI3453 series of Power over Ethernet controllers. It is specifically engineered for Powered System Entities (PSE) in networking applications. The part integrates control logic and power switching functions into a single compact package. It serves as a core component for managing power delivery over Ethernet cables according to established industry standards.

Replacement Considerations

The TPS2384PAP from Texas Instruments is listed as a similar substitute part number. Evaluate functional equivalence regarding channel count and protocol support before substitution.

FAQ

What IEEE standards does the SI3453B-B01-GM support?

It supports both IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards.

How many channels are integrated into this controller?

The device integrates four independent control channels.