LTC4265CDE#TRPBF

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Power Over Ethernet (PoE) Controllers are used for providing power over communication networks. The LTC4265CDE#TRPBF is a high-performance PoE controller that offers many advantages to system designers, including programmable output current, integral temperature measurement, adjustable input voltage range and ESD protection.

The LTC4265CDE#TRPBF is designed to be a primary controller in an isolated architecture that interfaces with a DC/DC converter and PoE PD to control and monitor a PoE system. It provides an optimal solution for both high power and low power PDs, allowing up to 25W at the PSE and up to 25W at the PD.

The LTC4265CDE#TRPBF provides an adjustable current regulation range from 0 to 1.3A. An inrush current limiter can be set externally with a resistor. The on-chip shunt regulator limits the PSE output current by shutting off the output current when power is not required. Furthermore, the output voltage is adjustable from 24V to 57V, thus allowing for flexibility with various source voltages.

The LTC4265CDE#TRPBF provides several features to improve system performance. The on-chip voltage and temperature sensors allow for an "intelligent" measurement of power delivered, allowing it to be optimized according to the device needs. Furthermore, it offers an adjustable over-current protection and ESD protection to protect the system from power surges.

The LTC4265CDE#TRPBF works by using the on-board voltage and temperature sensors to monitor the input voltage, output current, and temperature. An internal comparator measures the input voltage and adjusts the gate of the output MOSFET accordingly. This allows for accurate control of the output current without the need for external resistors or current sense resistors. A separate protection circuit monitors the output voltage for any overvoltage conditions, and will shut off the output if the voltage reaches an unsafe level.

The LTC4265CDE#TRPBF is an ideal solution for applications such as PoE PSEs, PoE PDs, PD isolation, and Power Flow Control solutions. Its features make it a great choice for enabling efficient delivery of high-power data systems. In addition, its small size and low power consumption make it easy to integrate into systems requiring high-performance PoE performance while minimizing system costs.

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