LTC4265CDE#PBF

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The LTC4265CDE#PBF is a high power, high performance, and high efficiency Power Management Integrated Circuit (PMIC) controller used for Power Over Ethernet (PoE) applications. It features a 23A peak current sense amplifier, low voltage drop rectifier, low voltage drop PWM regulator, and a wide temperature range control loop. The LTC4265CDE#PBF is well suited for applications requiring high power delivery over long PoE cable distances, providing up to 100W of power delivery at a supply voltage of 48V. The device is also ideal for industrial automation applications such as factory automation, machine vision, remote monitoring and control systems, machine-to-machine communication, and healthcare monitoring solutions.

The LTC4265CDE#PBF is designed to meet IEEE 802.3af and IEEE 802.3at Power over Ethernet (PoE) standards. It meets the requirements for supplying primary power to remote equipment and optionally providing the PoE protocol, which is a standard condition for high performance PoE applications. The device is capable of supplying up to 12W of power to IEEE802.3af compliant systems and 55W of power to IEEE802.3at compliant systems. It is easily configured over a two-wire I2C interface to provide high levels of reliability, security, and advanced control features such as fault detection and reporting.

The LTC4265CDE#PBF operates under a single 48V DC supply with a peak current of up to 23A at nominal supply voltage. The device features a current sense amplifier that is able to detect faults in the +VIN or -VIN supplies and provide protection for the PoE system. The device also features a low voltage drop rectifier, a low voltage drop PWM controller, and a wide temperature range control loop. This allows the LTC4265CDE#PBF to deliver up to 100W of power with maximum efficiency while maintaining a constant temperature across the full load range.

The LTC4265CDE#PBF integrates a set of features and fault detection capabilities that enable superior performance, reliability, and safety. The ability to detect and report problems including overvoltage, undervoltage, over-current, and excessive temperature conditions allows for timely notifications for corrective action. The device features programmable current and voltage limit thresholds and a system enable/disable control to correctly handle varying load conditions and adapt to different network conditions. Additionally, the LTC4265CDE#PBF also provides protection against short circuits and other conditions that could cause damage to the system.

The LTC4265CDE#PBF is designed to ensure that it functions within a wide temperature range of -40^oC to +85^oC with improved thermal dissipation compared to previous devices. The device is also designed to improve efficiency at higher load levels and has a low quiescent current of less than 8μA. The LTC4265CDE#PBF provides the flexibility to optimize and fine-tune the power delivery according to system requirements. This includes the ability to configure the controller for maximum power efficiency, as well as configurable protection limits that detect and protect the system from over-temperature, over-voltage, and over-current conditions.

In summary, the LTC4265CDE#PBF is a high power, high performance, and high efficiency PMIC controller used for PoE applications. It features a 23A peak current sense amplifier, low voltage drop rectifier, low voltage drop PWM regulator, and a wide temperature range control loop, making it an ideal solution for industrial PoE applications. The device is designed to meet IEEE 802.3af and IEEE 802.3at Power over Ethernet (PoE) standards. It has the capability to provide up to 12W of power to IEEE802.3af compliant systems and 55W of power to IEEE802.3at compliant systems, while meeting requirements under wide temperature range conditions. It also integrates with various fault detection and protection mechanisms, allowing for improved performance, reliability, and safety.

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