LTC4268CDKD-1

The LTC4268CDKD-1 is an integrated Power over Ethernet (PoE) controller designed by Analog Devices (formerly Linear Technology). It is specifically used for applications requiring high power delivery, such as IP telephones, wireless access points, and networked security cameras. The device is compliant with the IEEE 802.3af/at standards, which ensures interoperability with other PoE equipment.
This controller consists of a PD interface and a DC-DC converter controller. It can handle power levels up to 25.5W, making it suitable for both Type 1 (15.4W) and Type 2 (30W) PoE applications. The LTC4268CDKD-1 supports detection, classification, and current limiting features to ensure safe power negotiation between the power sourcing equipment (PSE) and the powered device (PD).
The device comes in a compact 16-lead DFN package, offering a small footprint for space-constrained applications. It also includes thermal protection and input over-voltage protection, enhancing the reliability and robustness of the power supply design. Overall, the LTC4268CDKD-1 provides a comprehensive solution for efficiently managing power in PoE systems.

The LTC4268CDKD-1 is a Power over Ethernet (PoE) controller designed for powered devices (PD) that comply with the IEEE 802.3af standard. Key features include:
1. PoE Compatibility: Supports IEEE 802.3af standard, ensuring efficient power and data delivery over a single Ethernet cable.
2. Integrated Hot Swap Controller: Manages inrush current for safe power-up and includes thermal protection.
3. Signature Resistor Detection: Automatically detects and classifies PDs, enabling proper communication with power sourcing equipment (PSE).
4. Advanced Power Management: Supports programmable inrush current, operational current limit, and undervoltage lockout to ensure robust performance.
5. Auxiliary Power Support: Offers an auxiliary power input for applications requiring additional power beyond PoE capabilities.
6. Compact Package: Available in a compact 10-lead DFN package, suitable for space-constrained applications.
7. Protection Features: Includes thermal shutdown, reverse polarity protection, and input overvoltage protection for enhanced reliability.
This device is ideal for applications like IP phones, wireless access points, and IP cameras, where efficient power management and compliance with PoE standards are crucial.

The LTC4268CDKD-1 is typically available in a DFN (Dual Flat No-Lead) package. This package type is compact and suitable for surface-mount technology, offering efficient thermal performance and electrical characteristics.

The LTC4268CDKD-1 is a Power over Ethernet (PoE) controller designed for Powered Device (PD) applications. It typically comes in a 14-pin DFN package. The main functions of this IC are to manage the detection, classification, and power delivery processes required for PoE systems. It supports IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, allowing it to handle power up to 25.5W.
Key functions include:
1. Detection and Classification: Identifies and classifies the PD on the network.
2. Power Regulation: Provides DC/DC conversion and voltage regulation to supply power to the PD.
3. Protection: Offers overvoltage, overcurrent, and thermal protection features to ensure reliable operation.
The LTC4268CDKD-1 is well-suited for use in applications such as IP phones, wireless access points, and security cameras, where efficient and standardized power delivery is needed.

The LTC4268CDKD-1 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves a wide range of industries, including telecommunications, automotive, healthcare, consumer electronics, and industrial equipment. They focus on providing solutions for signal processing challenges, offering products that enhance the performance and efficiency of electronic systems.

The LTC4268CDKD-1 is primarily used in Power over Ethernet (PoE) applications. It serves as a Powered Device (PD) interface controller, making it suitable for IP phones, wireless access points, IP cameras, and other networked devices that require power via Ethernet cables. Its functionality includes detection, classification, and power management, enabling reliable delivery of power and data over a single network connection.

The LTC4268CDKD-1 is a Power over Ethernet (PoE) controller. Equivalent products include the TPS2378 from Texas Instruments, the IEEE 802.3at-compliant PD70210 from Microchip, and the Si3402-B from Silicon Labs. These alternatives offer similar functionality for PoE applications, although specific features and performance may vary. Always check datasheets for compatibility with your specific requirements.