LTC4274CIUHF#PBF

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The LTC4274CIUHF#PBF is a type of power management integrated circuit (PMIC) and a Power Over Ethernet (PoE) Controller specifically designed to enable the implementation of the latest IEEE 802.3 standards. This particular PMIC offers a full suite of advanced power management capability and Ethernet PoE detection, with improved benefits such as low power standby operation, accurate power delivery, and better load sharing. It provides a valuable solution for mission-critical applications that require robust, high-performance power control for both Ethernet and PoE networks.

Features

The LTC4274CIUHF#PBF PMIC’s many integrated features and functions make it an ideal choice for PoE applications, such as switch and router boards, access points, and PoE camera systems. It has a few key features, such as an integrated PWM controller and gate drivers, as well as a wide range of power management integrated circuits, which allow for the highest possible power efficiency and circuit implementation. These include a programmable voltage regulator, success timer, active current limit, foldback current limit, voltage monitoring comparators, and a three-level priority logic. The device also has an integrated transient voltage regulator and a temperature compensated reference, which allow the user to set a maximum power delivery limit. Furthermore, it has an adjustable automatic load detect feature, which helps to extend Ethernet network maintenance intervals.

Applications

The LTC4274CIUHF#PBF PMIC has many practical applications. It can be used in a wide range of applications, from industrial automation systems to industrial Ethernet networks. Beyond this, it is also suitable for powering Ethernet-enabled edge devices and wireless access points, as well as for powering PoE cameras and other edge-convergent devices. Additionally, the built-in active current limit and thermal monitoring functions help to ensure reliable operation and performance. Finally, its wide dynamic range of current and voltage regulation make it an attractive option for powering industrial and commercial applications.

Working Principle

The LTC4274CIUHF#PBF PMIC utilizes Power Over Ethernet (PoE) technology, which allows multiple devices to be simultaneously connected to the same network. Each device connected to the network requires a certain amount of power in order to operate, and the amount of power required depends upon the type of device, its size, and its operating voltage. The PMIC utilizes the 802.3af protocol to detect the presence of a PoE-powered device, allowing it to decide how much power it should supply. Once the device is connected, the PMIC monitors the current and voltage through its integrated voltage and current sensing pins and adjusts it for optimal power utilization, providing power up to 25.5W.

Conclusion

The LTC4274CIUHF#PBF PMIC is an ideal solution for Power Over Ethernet applications, due to its many features and its wide range of applications. Its integrated PWM controller and gate drivers, as well as its adjustable active current limit and thermal detection, help to ensure reliable operation and efficient use of power. Furthermore, its adjustable automatic load detect feature extends Ethernet maintenance intervals, and its wide dynamic range of current and voltage regulation makes it an attractive choice for powering industrial and commercial applications.

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