LTC4267CGN-3#PBF

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The LTC4267CGN-3#PBF is a PoE controller integrated circuit (IC) which power source equipment (PSE) operates based on the Power over Ethernet (PoE) technology developed by the IEEE 802.3 standard. This IC is from Linear Technologies which has been developed to allow devices to be powered directly from a Category 5 or higher Ethernet cable. Its flexible design adds flexibility when PoE power is being used with a variety of different types of Ethernet applications.

The LTC4267CGN-3#PBF is designed to provide a complete DC shutdown with a rise time of less than 500ms. It is especially useful when powering in locations with limited power outlets. This IC has the ability to control both DC-DC converters and non-isolated DC-DC converters. Furthermore, it is capable of providing isolation to limit the duration of any fault currents.

In addition, the LTC4267CGN-3#PBF features include two PWM controllers, over-voltage and over-temperature protection, and an out-of-sequence fault protection. This PoE controller also offers power distribution in the PoE device and an adjustable current limit extend the number of applicable Ethernet devices. Furthermore, its low-noise power switching minimizes the disruption on the line.

The LTC4267CGN-3#PBF is equipped with a direct-loop primary-side control technique that gives it the ability to function as a fully isolated PoE controller. This feature increases system reliability and compatibility as the isolated controller is able to detect faults without the need for an isolated fly-back diode. In addition, it is able to provide a diagnosis function to indicate source faults, detect communication failures, and provide real-time PoE power level monitoring.

The working principle of the LTC4267CGN-3#PBF involves a system with an Ethernet cable connecting to the PSE port and the PD port on the other end. Power is then created when an Ethernet signal is sent from the PSE to the PD, which is then detected by the IC and converted into the power supply. This power is then used to power the device through its DC-DC converter and filtering.

The LTC4267CGN-3#PBF has a variety of applications. Its main purpose is to serve as a power line communication controller for PoE applications. It can be used for powering IP cameras, Wi-Fi access points, 1-Gigabit or 10-Gigabit Ethernet, or other PoE devices. This IC is also ideal for powering LED lighting and DC motor-driven curtains, and it can be used for power control, monitoring, and fault detection in industrial automation networks.

The LTC4267CGN-3#PBF is one of the most advanced PoE controllers that has been developed by the IEEE 802.3 standard. This IC is designed to provide a direct-loop primary-side control technique coupled with fault protection, synchronization, and diagnostic features, allowing it to be used for a variety of applications. Its wide range of features allows it to be incorporated into small form factors, making it suitable for use in a variety of small, space-constrained applications.

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