SI3452C-B02-GMR

Overview

The SI3452C-B02-GMR is a four-channel Power over Ethernet controller manufactured by Skyworks Solutions Inc. It supports IEEE 802.3at (PoE+) and 802.3af standards for Powered Device applications. The component integrates an interface with a DC-DC converter, operating within a supply voltage range of 2.8 V to 57 V. It features a maximum current limit of 680 mA and a maximum on-resistance of 1.3 Ohms. Designed for surface mount installation, it utilizes a QFN-20 package and functions reliably across temperatures from -40°C to +85°C.

Feature Summary

• Four-channel PoE controller architecture supporting 802.3at and 802.3af protocols
• Integrated DC-DC conversion capability for efficient power delivery
• High-voltage operational range accommodating wide input variations

Applications

• Powered Device (PD) interface design in network infrastructure
• LAN equipment requiring compliant PoE power management
• Industrial networking hardware operating in extended temperature environments

Procurement Notes

Verify the specific suffix B02 against official Skyworks documentation to confirm pinout and electrical characteristics match your schematic requirements. Ensure the QFN-20 footprint aligns with your PCB layout guidelines. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring integrated PoE control and DC-DC conversion in a compact form factor. The four-channel configuration suits multi-port applications. Verify that the 680 mA current limit meets the load requirements of your connected devices. Ensure the operating voltage range covers your system's input specifications.

Part Context

This part belongs to the SI3452 series of Power over Ethernet controllers. It serves as a specialized PMIC solution for network interfaces. The device consolidates control logic and power switching functions. It is distinct from generic switches by offering protocol-specific management features tailored for Ethernet-powered applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions technical support or authorized distributors for validated cross-reference data before attempting any substitution.