LTC9103AUKJ#TRPBF

Overview

The LTC9103AUKJ#TRPBF is an 8-channel Power over Ethernet (PoE) Powered Device (PD) controller manufactured by Analog Devices. It supports IEEE 802.3at (PoE+), 802.3af (PoE), and 802.3bt Type 3/4 standards. The device integrates internal switches with a maximum power handling of 71.3 W per channel. It operates within a supply voltage range of 3.0 V to 5.5 V and functions across a temperature range of -40°C to +125°C. The component is housed in a 62-pin 7x11 mm QFN package.

Feature Summary

• Integrates eight independent PoE channels compliant with IEEE 802.3at, 802.3af, and 802.3bt standards
• Includes internal high-side switches for direct load connection without external MOSFETs
• Supports Class 0 through Class 8 classification for precise power negotiation
• Features integrated current sensing and protection mechanisms for each channel

Applications

• High-density IP cameras and video surveillance systems requiring multi-port connectivity
• Industrial IoT gateways and edge computing nodes with multiple peripheral interfaces
• Wireless access points and network infrastructure equipment needing robust power delivery
• Medical imaging devices and diagnostic equipment utilizing PoE-powered sensors

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the lead-free and RoHS-compliant status matches your environmental requirements. Ensure the 62-pin QFN footprint aligns with your PCB layout constraints. Cross-reference the latest datasheet revision for any updates to electrical characteristics or recommended operating conditions before finalizing procurement.

Selection Notes

Select this component when designing systems requiring up to eight isolated PoE inputs with integrated switching capabilities. It is suitable for applications demanding support for the highest power levels defined in IEEE 802.3bt. Consider the thermal performance of the 7x11 mm QFN package under maximum load conditions. Evaluate the need for auxiliary sense lines if remote voltage regulation is required for downstream loads.

Part Context

This part belongs to the LTC9103 family of PoE PD controllers from Analog Devices. It is designed to simplify the implementation of multi-port powered devices in modern networked environments. The integration of internal switches reduces bill-of-materials count compared to discrete solutions. It complements other PoE components like PSE controllers and midspan injectors in complete system designs.

Replacement Considerations

Check for pin-compatible alternatives within the same manufacturer's portfolio that may offer different channel counts or updated standard support. Verify that any substitute maintains compatibility with IEEE 802.3bt Type 3 and Type 4 classifications. Ensure the replacement package size fits existing board space constraints.