SI3454-C05-IMR

Overview

The SI3454-C05-IMR is a Power Sourcing Equipment (PSE) controller designed for IEEE 802.3at (PoE+) applications. It manages four independent Ethernet ports, enabling power delivery over standard twisted-pair cabling. The device operates within a supply voltage range of 44V to 57V and draws a typical supply current of 18mA. It supports surface-mount installation in a 38-VFQFN package with dimensions of 5x7 mm. The component functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports four-channel IEEE 802.3at PoE+ power sourcing equipment implementation
• Integrates management capabilities for single-cable power and data transmission
• Designed for surface-mount technology assembly

Applications

• Four-port PoE+ network switches
• Power-over-Ethernet midspan injectors
• Enterprise networking infrastructure equipment

Procurement Notes

Verify the exact ordering suffix against the manufacturer's official documentation to ensure correct package and tape-and-reel specifications. Confirm that the specific variant matches your design requirements for voltage ranges and thermal performance. Cross-reference the datasheet revision history to ensure compatibility with current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring integrated control for multiple PoE+ ports. Ensure the host system provides a stable input voltage between 44V and 57V. Verify that the PCB layout accommodates the 38-VFQFN footprint and meets thermal dissipation requirements for the specified ambient temperature range during continuous operation.

Part Context

This part belongs to Skyworks Solutions' portfolio of specialized power management integrated circuits focused on Ethernet connectivity. It addresses the growing demand for centralized power distribution in modern network architectures. The controller simplifies the design complexity associated with multi-port PoE implementations by integrating necessary control logic.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's official documentation or authorized distributor databases for verified cross-reference information before considering alternative components.