SI3400-C-GM

Overview

The SI3400-C-GM is a single-channel Power over Ethernet (PoE) controller integrated circuit manufactured by Skyworks Solutions Inc. It complies with the IEEE 802.3af standard for Powered Device applications. The device operates within a supply voltage range of 2.8V to 57V and supports a maximum power output of 15W. It features an internal switch and is housed in a 20-QFN package measuring 5x5 mm. The component is designed for surface mount installation and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Complies with IEEE 802.3af PoE standards for powered device integration
• Integrates a DC/DC converter and internal power switch for efficient energy management
• Supports wide input voltage operation from 2.8V up to 57V
• Designed for compact surface-mount deployment in space-constrained systems

Applications

• IEEE 802.3af compliant Powered Device implementations
• Network infrastructure equipment requiring centralized power control
• IoT devices utilizing Power over Ethernet connectivity
• Industrial communication modules needing robust power management

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm datasheet revisions and compliance documentation prior to procurement. Ensure storage conditions meet moisture sensitivity level requirements. Validate pinout compatibility with target PCB layout. Review end-of-life status and availability constraints before finalizing purchase orders.

Selection Notes

Evaluate system power requirements against the 15W maximum limit. Verify voltage compatibility within the 2.8V to 57V operating range. Assess thermal performance capabilities within the specified temperature boundaries. Compare physical dimensions against available board space constraints. Consider interface requirements and protocol support for network integration.

Part Context

This component belongs to the Skyworks SI3400 series, which provides specialized solutions for Power over Ethernet applications. The series includes variants tailored for different channel counts and power levels. The SI3400-C-GM specifically addresses single-channel powered device needs, offering a compact footprint suitable for modern electronic designs requiring efficient power delivery over network cabling.

Replacement Considerations

Direct substitutes are not explicitly documented in public sources. Evaluate alternative single-channel PoE controllers from other manufacturers based on pin compatibility and electrical specifications. Verify functional equivalence regarding IEEE 802.3af compliance and voltage ranges before implementation.