LTC4251-2CS6#TRMPBF

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Power Management IC (PMIC) is a type of integrated circuit that is used to manage, process and regulate the power supply within a system. Hot swap controllers, or HSCs, are a special type of PMIC that regulate the insertion and removal of electronic loads from live systems without damage to the connected components. The LTC4251-2CS6#TRMPBF is an HSC designed and manufactured by Linear Technology Corporation (LTC). This device can enable a hot-swap circuitry in applications such as server, telecom and NPU backplane systems. This article will discuss the application field and working principle of the LTC4251-2CS6#TRMPBF.

The LTC4251-2CS6#TRMPBF is designed to protect against overvoltage, undervoltage and short circuit events, as well as current inrush when applying voltage to an unpowered system, or replacing a load when the supply remains powered. It contains adjustable overvoltage and undervoltage thresholds, that are set using independent resistors to set accurate trip points for the commander amplifier control. The LTC4251-2CS6#TRMPBF is in the 4 mm × 4 mm 8-Lead DFN package, which provides superior thermal performance and packaging density.

The LTC4251-2CS6#TRMPBF is designed with two separate control channels, each of which include an adjustable trip point, a comparator, and a controlled output. The trip point is set with an external resistor, and is adjustable from 0.45V to 3.16V. Depending on the trip point, the comparator can be configured to have a hysteresis of 0 to 0.45V so that it does not oscillate in between the trip points. The output of the comparator is connected to the controlled output, which is an active-low shutdown that can be connected to the enable input of the external power switch or load.

When power is applied to the LTC4251-2CS6#TRMPBF, it monitors the voltage passing through it and compares it to the set trip points. If the voltage meets either the overvoltage or undervoltage thresholds, the controlled output will be turned off, thereby preventing damage to the system. The device also protects against short circuit events and current inrush. If a short occurs, the OV and UV trip points are ignored and the current is limited to 200mA. When the short is removed, the LTC4251-2CS6#TRMPBF will restart and go back to normal operation.

The LTC4251-2CS6#TRMPBF is suitable for use in server, telecom and NPU backplane systems. It can be used to provide power to components without causing damage or interruption to the system. Additionally, its adjustable trip points can be used to set the maximum and minimum voltage thresholds, ensuring protection against overvoltage and undervoltage events. The device also provides protection against short circuits and limits current to 200mA when a short event occurs, protecting the connected components from becoming damaged.

Overall, the LTC4251-2CS6#TRMPBF is an ideal solution for regulating power supply in server, telecom and NPU backplane applications. It provides adjustable trip points for overvoltage and undervoltage protection, and it also provides protectionagainst short circuit events and current inrush. With its small form factor and superior thermal performance, the LTC4251-2CS6#TRMPBF is an excellent choice for power management in these applications.

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