SI3459-B04-IM

Overview

The SI3459-B04-IM is an eight-port Power Sourcing Equipment (PSE) controller compliant with the IEEE 802.3at standard, designed for Power over Ethernet applications. It supports up to 30W per port and operates within a supply voltage range of 37V to 57V. The device integrates power switches and control logic for managing multiple Ethernet ports simultaneously. It utilizes a 56-QFN package measuring 8x8 mm, suitable for surface mount installation in compact networking infrastructure.

Feature Summary

• Supports eight independent PoE channels compliant with IEEE 802.3at standards
• Integrates power switching and control logic for simplified system design
• Enables high-power delivery of up to 30W per port

Applications

• Multi-port PoE network switches
• Power sourcing equipment for enterprise LAN infrastructure
• Industrial Ethernet controllers requiring high port density

Procurement Notes

Verify component authenticity through authorized Skyworks distributors. Confirm the specific suffix matches project requirements. Check datasheet revisions for updated electrical characteristics. Ensure ESD protection protocols are followed during handling. Validate compatibility with existing PCB layout constraints before finalizing procurement.

Selection Notes

Select this controller for designs requiring integrated management of eight PoE ports without external discrete switches. Consider thermal performance due to high power density. Verify input voltage ranges match the system's power supply architecture. Evaluate footprint compatibility with the 56-QFN package dimensions.

Part Context

This component belongs to Skyworks' PoE controller family, specifically engineered for high-density networking applications. It consolidates functions typically handled by separate controllers and power stages, reducing bill-of-materials complexity. The series targets modern switch implementations adhering to advanced PoE standards.

Replacement Considerations

The SI3459-B02-IM is a related variant within the same product family. Verify pinout compatibility and specific feature differences before substitution. Consult official documentation for detailed comparison of electrical parameters and packaging specifications.