LTC1421ISW#TRPBF

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PMIC - Hot Swap Controllers enable the powering of boards with higher voltage power rails than those present in the system power supply. The LTC1421ISW#TRPBF is one such Hot Swap Controller that can enable the addition of higher voltage rails to the system without having to modify the existing power supply. It uses a patent pending, proven topology that provides adjustable slope current foldback, adjustable slew rate current foldback, adjustable low current trip, selectable auto-recovery, input/output failsafe, and input undervoltage lockout, among other features. In addition, the device also provides a low on-resistance Internal MOSFET.

The LTC1421ISW#TRPBF works by allowing a positive voltage to be applied to the load with a circuit that controls the total current draw. This is done by sensing the voltage and current on the output side and then limiting the current when it exceeds a predetermined level. The device also provides a low voltage drop and allows for power conversion and distribution of multiple outputs from one source. In addition, it offers a wide input voltage range of 1.65V to 36V and a continuous load current rating of up to 4A.

The different features of the device include adjustable slew rate current foldback, adjustable low current trip, and selectable auto-recovery, among others. An adjustable low current trip is one of the most important features, since it allows the device to quickly respond to a fault condition, like a dead load or a short circuit, and shut down the output before it receives too much power or current. This feature can also be used to avoid overloading of the power supply. Additionally, the device provides a selectable auto-recovery feature, which enables it to restart the output and resume normal operation once the fault conditions have been cleared.

The device’s adjustable slew rate current foldback feature allows the output current to be limited and the voltage of the device to be increased or decreased, depending on the input current. This helps limit the power and current to protect the device from damage if the voltage on the input side falls too low or spikes suddenly. And the adjustable low current trip then shuts down the output when the input current exceeds a predetermined level, avoiding damage to the power supply.

The device also features an input undervoltage lockout, which prevents the device from turning on when the input voltage is too low. The device also has an input/output failsafe feature, which prevents the output from exceeding the permitted levels, even if the input voltage is lowered below a certain level. This feature also helps protect the power supply from overloading.

Overall, the LTC1421ISW#TRPBF is a reliable Hot Swap Controller that offers several features that allow it to protect the system from damage and prolong its life. It provides adjustable slope current foldback, adjustable slew rate current foldback, adjustable low current trip, selectable auto-recovery, input/output failsafe, and input undervoltage lockout, among other features. This makes it suitable for a wide range of applications, including high-end systems, automotive, communications, and industrial applications.

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