LTC4290BIUJ#PBF

Overview

The LTC4290BIUJ#PBF is an eight-channel Power over Ethernet (PoE) Powered Device (PD) controller designed for IEEE 802.3at and 802.3af compliant systems. It operates within a supply voltage range of 3V to 3.6V and supports a maximum delivered power of 25.5W per channel. The device features input current, voltage, and power telemetry capabilities. It is housed in a 40-pin QFN package with dimensions of 6x6 mm and is rated for operation between -40°C and +85°C.

Feature Summary

• Provides comprehensive telemetry for input current, voltage, and power on each channel
• Supports IEEE 802.3at Type 1 and Type 2 high-power PoE standards
• Integrates monitoring for VEE and VPORT lines

Applications

• IEEE 802.3af/at compliant network infrastructure devices
• High-power PoE endpoint equipment
• Industrial networking applications requiring precise power monitoring

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm that the BIUJ variant meets the required temperature range and pin configuration for your PCB layout. Ensure compatibility with the target PoE standard before integration.

Selection Notes

Select this component for designs requiring multi-channel PoE PD functionality with integrated telemetry. It is suitable for applications needing strict adherence to IEEE 802.3at specifications. Consider the 40-QFN footprint during mechanical design and thermal management planning.

Part Context

This part belongs to the Analog Devices LTC4290 family of PoE controllers. It is specifically engineered as a Powered Device controller rather than a Power Sourcing Equipment controller. The device complements other PoE solutions by providing detailed power measurement data for system management.

Replacement Considerations

Check for direct substitutes within the LTC4290 series or compatible PD controllers from Analog Devices. Verify pin-to-pin compatibility and electrical parameter alignment before substituting.