SI3452B-B01-GM

Overview

The SI3452B-B01-GM is a Power over Ethernet (PoE) controller manufactured by Skyworks Solutions Inc. It supports IEEE 802.3af and 802.3at standards for four-channel operation. The device operates within a supply voltage range of 45V to 57V and draws a supply current of 4mA. It features internal switches and is housed in a 40-QFN package measuring 6x6 mm. The component is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports IEEE 802.3af and 802.3at PoE standards
• Four-channel power sourcing equipment capability
• Integrated internal switches for channel control

Applications

• Power Sourcing Equipment (PSE) systems
• Network infrastructure powering devices
• IEEE 802.3af compliant network endpoints

Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm availability through authorized distributors or secondary markets, as original manufacturing has ceased. Ensure replacement strategies are aligned with current inventory levels and lead times for alternative sources.

Selection Notes

Select this component for designs requiring multi-channel PoE compliance with integrated switching. Consider the 40-QFN package constraints and thermal requirements for the specified operating temperature range. Evaluate compatibility with existing PCB layouts designed for the 6x6 mm footprint.

Part Context

This part belongs to the Skyworks SI3452 series of PoE controllers. It is functionally related to the SI3453C-B01-GM but may differ in specific configuration or feature sets. Both components share similar packaging and standard support profiles.

Replacement Considerations

The TPS2384PAP from Texas Instruments is listed as a similar substitute. Verify pinout compatibility and functional equivalence before implementation.