LTC4259ACGW-1#TRPBF

Overview

The LTC4259ACGW-1#TRPBF is a quad IEEE 802.3af Power over Ethernet controller designed for power sourcing equipment applications. It integrates four independent channels to manage -48V powered ports, featuring an AC disconnect function and I2C serial interface control. The device supports a 4-bit programmable digital address, allowing up to 64 ports to be controlled. It operates within a supply voltage range of 3 V to 4 V and functions across a temperature range of 0°C to +70°C. The component is housed in a 36-SSOP package.

Feature Summary

• Integrates four independent channels for managing IEEE 802.3af powered ports
• Supports autonomous operation or I2C serial interface control
• Includes AC disconnect functionality for safety compliance
• Features 4-bit programmable digital addressing for scalable port management

Applications

• Power Sourcing Equipment (PSE) systems
• -48V powered Ethernet port controllers
• Network infrastructure power management

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when reviewing official documentation. Confirm that the AC disconnect feature is active as specified in the datasheet. Ensure the I2C address configuration matches system requirements for multi-port scalability. Check current availability status as distribution may vary by region.

Selection Notes

Select this component for designs requiring integrated quad-channel PoE control with AC disconnect capabilities. The I2C interface allows for flexible system integration and monitoring. Consider the 36-SSOP package size for board layout constraints. Verify compatibility with -48V power standards and required operating temperature ranges.

Part Context

This part belongs to the LTC4259 family of Power over Ethernet controllers from Analog Devices. It is specifically engineered for PSE applications compliant with IEEE 802.3af standards. The device consolidates multiple power switch and control functions into a single IC, simplifying design complexity for network equipment manufacturers.

Replacement Considerations

The LTC4259ACGW-1#PBF is a parameter-equivalent alternative available in tube packaging instead of tape and reel. Verify that the packaging difference does not impact automated assembly processes. Both variants share identical electrical specifications and functional features.