The LTC4268IDKD-1#PBF is a sophisticated PoE interface and switching regulator controller from Linear Technology, designed to simplify the implementation of Power over Ethernet functionality in networked devices. This integrated circuit is compliant with the IEEE 802.3af standard, ensuring interoperability with other compliant devices in the network.

Key Features:

• IEEE 802.3af Compliant: The device meets the requirements of the IEEE 802.3af standard for PoE, allowing it to safely extract power from PoE enabled networks.
• Integrated Switching Regulator: The LTC4268IDKD-1#PBF incorporates a high-efficiency switching regulator controller, providing a complete power supply solution in a single package.
• Signature Resistor Detection: It supports the standard PoE signature detection mechanism, ensuring that only compliant devices draw power from the network.
• Programmable Classification: The IC allows for programmable class assignments, enabling devices to specify their power requirements to the PoE power sourcing equipment (PSE).
• High Power Applications: This product is suitable for high power applications, capable of delivering up to 13W of output power to the powered device (PD).
• Thermal Protection: It includes thermal protection features that prevent overheating and damage to the PD during operation.
• Advanced Package: Offered in a 12-lead DFN package, the LTC4268IDKD-1#PBF is designed for compact and efficient layout in space-constrained applications.

Applications:

The LTC4268IDKD-1#PBF is ideal for a wide range of applications that require remote power delivery over Ethernet cables. These include:

• VoIP Phones
• Wireless Network Access Points
• Security Cameras
• Networked Appliances
• Industrial Controllers

With its robust feature set and compliance with the IEEE 802.3af standard, the LTC4268IDKD-1#PBF from Linear Technology is an excellent choice for designers looking to integrate PoE capabilities into their networked devices with minimal additional components and complexity.