SI3453C-B01-GM

Overview

The SI3453C-B01-GM is a Power Sourcing Equipment (PSE) controller manufactured by Skyworks Solutions Inc. It supports four channels compliant with IEEE 802.3af and 802.3at 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 of 40W. The component is housed in a 40-QFN package measuring 6x6 mm and is designed for surface mount installation. It functions as a controller type with no auxiliary roles.

Feature Summary

• Supports 802.3af and 802.3at PoE standards
• Four-channel architecture with internal switches
• Integrated PSE controller functionality

Applications

• Ethernet powered devices infrastructure
• Network switch power sourcing equipment
• PoE injector implementations

Procurement Notes

Verify component obsolescence status prior to procurement, as the SI3453C-B01-GM is listed as obsolete and no longer manufactured. Confirm availability of qualified replacement parts such as the TPS2384PAP from Texas Instruments if continued production is required. Ensure that any substitute components meet the specific electrical and mechanical requirements of the original design to maintain system compliance and performance integrity.

Selection Notes

Select this component for designs requiring multi-channel PoE control with internal switching capabilities. Consider the 40-QFN package dimensions for PCB layout constraints. Evaluate thermal management requirements given the 40W maximum power rating. Verify compatibility with 802.3af and 802.3at protocols for network infrastructure applications. Assess supply chain stability due to the discontinued status of this specific part number.

Part Context

This component belongs to the Skyworks Solutions Inc. portfolio of power management integrated circuits. It falls under the category of Ethernet供电 controllers designed for network infrastructure. The manufacturer specializes in RF and power solutions for communication systems. This specific part represents a legacy product within their PMIC lineup, previously used in standard PoE deployments before being superseded by newer generations or alternative manufacturers.

Replacement Considerations

The TPS2384PAP from Texas Instruments is identified as a similar replacement part. Verify pinout compatibility and electrical specifications when substituting. Ensure the alternative meets IEEE 802.3af/at requirements.