SI3403-A-GM

Overview

The SI3403-A-GM is a hot-swap voltage controller designed for Power over Ethernet (PoE) Powered Devices, supporting power levels up to 17W. It integrates low-EMI switching capabilities and is recommended by the manufacturer for all new designs. The component operates within a supply voltage range of 2.8V to 57V and functions reliably across an industrial temperature range from -40°C to +85°C. It utilizes a QFN-20 surface-mount package and includes internal protection features such as current limiting and thermal shutdown.

Feature Summary

• Integrated low-EMI switching technology to minimize electromagnetic interference in sensitive environments
• Built-in hot-swap control for safe insertion and removal without system disruption
• Comprehensive protection mechanisms including current limit and thermal shutdown

Applications

• Power over Ethernet Powered Device interfaces
• Industrial networking equipment requiring robust power management
• Telecommunications infrastructure powered via Ethernet cables

Procurement Notes

Verify availability status carefully as this component may be subject to limited supply or discontinuation notices. Confirm that the specific suffix matches your design requirements, as ordering suffixes do not inherently change functional characteristics unless explicitly stated in official documentation. Ensure compliance with RoHS directives and moisture sensitivity handling protocols during storage and assembly processes.

Selection Notes

Select this controller for applications requiring integrated PoE PD interface solutions with low EMI performance. It is suitable for designs needing reliable hot-swap functionality and comprehensive protection against electrical faults. Consider the QFN-20 package constraints for PCB layout and thermal dissipation requirements when integrating this component into the final system architecture.

Part Context

This part belongs to the Skyworks SI3403 series of hot-swap voltage controllers. It serves as a specialized solution for managing power delivery in PoE networks, distinguishing itself through integrated low-EMI features. The series is positioned for modern network devices requiring efficient and clean power management within standard Ethernet cabling constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative components based on pinout, voltage ratings, and functional specifications before implementation.