SI3452D-B01-GM

Overview

The SI3452D-B01-GM is a Power Over Ethernet (PoE) controller IC manufactured by Skyworks Solutions Inc. It functions as a four-channel PSE controller compliant with IEEE 802.3at (PoE+) and 802.3af (PoE) standards. The device operates within a supply voltage range of 45V to 57V and draws a supply current of 4mA. It supports a maximum power output of 40W per channel and features internal switches. The component is housed in a 40-VFQFN package with exposed pad, measuring 6x6 mm, and is designed for surface mount installation. It operates reliably across a temperature range of -40°C to 85°C.

Feature Summary

• Four-channel PoE/PoE+ controller architecture
• Compliance with IEEE 802.3af and 802.3at standards
• Integrated internal switches for power delivery
• Supports high-power applications up to 40W

Applications

• Power Sourcing Equipment (PSE) systems
• Ethernet switch power management
• Access point power distribution
• IP camera power injection modules

Procurement Notes

Verify component status carefully as the SI3452D-B01-GM is listed as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or secondary markets. Ensure that any substitute components meet the same electrical specifications and pinout compatibility requirements for your specific design implementation.

Selection Notes

Select this component for designs requiring multi-channel PoE control with integrated switching capabilities. Consider the 40-QFN package constraints for PCB layout. Verify thermal management needs given the 40W power handling capability. Ensure the system voltage aligns with the 45V-57V operating range for proper functionality.

Part Context

This part belongs to the SI3452/SI3453 family of PoE controllers from Skyworks Solutions. It is often paired with hot-swap voltage controllers like the SI3480 for complete port management solutions. The D suffix typically denotes specific binning or revision details within the product line.

Replacement Considerations

The TPS2384PAP from Texas Instruments is identified as a similar replacement option. Verify functional equivalence and pin compatibility before substitution.