SI3459-C05-IMR

Overview

The SI3459-C05-IMR is an eight-channel Power Sourcing Equipment (PSE) controller compliant with IEEE 802.3at standards. It supports a voltage supply range of 44V to 57V and operates with a typical supply current of 18mA. The device is housed in a 56-QFN (8x8) package.

Feature Summary

• Eight-channel PSE controller architecture
• IEEE 802.3at PoE compliance

Applications

• Power Over Ethernet systems
• Network infrastructure equipment

Procurement Notes

Verify the specific suffix IMR against official Skyworks documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with existing board layouts requiring the 56-QFN form factor. Confirm end-of-life status if applicable for long-term production planning.

Selection Notes

Select this component for designs requiring integrated control for multiple PoE ports under the 802.3at standard. Evaluate the 44V to 57V input range against system power requirements. Consider the thermal characteristics of the 56-QFN package for the specific enclosure environment.

Part Context

This part belongs to Skyworks Solutions' specialized power management IC portfolio, specifically targeting LAN and PoE applications. It serves as a central controller for managing power distribution across multiple Ethernet channels in network hardware.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.