LTC4273HTLUK

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PMIC - Power Over Ethernet (PoE) Controllers are a special type of power management integrated circuit (PMIC) that are specifically designed to provide power over Ethernet to network-connected devices. The LTC4273HTLUK is an example of a PoE controller that is specifically built to meet the IEEE 802.3af standards. In this article, we will discuss the application field of the LTC4273HTLUK and the working principles behind it.

The LTC4273HTLUK has a wide range of applications in industrial settings such as building automation and smart cities. It can be used to power remote industrial control systems, switchgear, and Ethernet hubs. It is also suitable for powering remote devices like cameras, lighting, and other IoT devices.

The LTC4273HTLUK is designed to provide up to 25W of power over an Ethernet cable. It is capable of delivering up to 3.84V and up to 6.56A of current over a single twisted-pair Ethernet cable. In order to protect the equipment connected to the device, the LTC4273HTLUK is equipped with an optional circuit breaker that can be adjusted to limit the power drawn from the power source.

At the heart of the device is its detection circuit, which is responsible for detecting the power requirements of a connected device. This circuit is responsible for engaging the device’s switch-mode power converter when it senses that a suitable power source is available. This converter then converts the available power into a steady DC output, with the current and voltage requirements adjusted according to the demands of the connected device.

The LTC4273HTLUK also contains circuitry for overcurrent and overvoltage protection. This circuitry is designed to monitor the current draw of the connected device and limit it to the maximum power rating specified for the device. It is also designed to shut down the device if an overvoltage situation is detected. In addition to protecting the device connected to it, these protective features also help to safeguard the Ethernet infrastructure from damage.

In addition to providing power over Ethernet, the LTC4273HTLUK is also capable of providing communications between the connected device and the Ethernet network. This is achieved using the National Semiconductor’s Daisy Chain NetworkTM communications protocol. This protocol allows multiple devices to be connected to the same Ethernet network, allowing for a master-slave type of configuration.

Overall, the LTC4273HTLUK is an ideal solution for powering remote industrial control systems, switchgear, and Ethernet hubs. It is specifically designed to meet the demands of the IEEE 802.3af standards, and its various protective features ensure that both the connected device and the Ethernet infrastructure are protected from overloads and overvoltage conditions. The device is also capable of providing communications between the connected device and the Ethernet network, making it an ideal choice for a range of PoE applications.

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