LTC4242IUHF#TRPBF

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The LTC4242IUHF#TRPBF is a versatile current-mode Hot Swap controller, which helps to manage difficult power up and power down conditions when adding or removing or replacing power supplies to a system. It is part of Linear Technology’s family of PMIC (Power Management IC) integrated circuits and provides advanced monitoring, protection and control functions for hot-swap applications with inputs from +20V to -2V. The device operates across -40°C to +125°C, ±10V tolerant digital inputs, wide feedback voltage range and supports up to 500mA of pull-up current. This makes it perfect for high-current, rugged and reliable applications.

Application Fields

The LTC4242IUHF#TRPBF is applicable for any application that needs to detect when a power supply is added or removed and in which high reliability and a robust operating ability are desired. This includes point-of-load requirements, such as telecommunications, industrial, networking and other similar high-reliability applications. The device also works well for 12V to 24V input systems.

Working Principle

The LTC4242IUHF#TRPBF is a versatile Hot Swap controller that helps to manage difficult power up and power down conditions when adding or removing or replacing power supplies to a system. The controller includes an internal high-side driver that senses the external supply voltage, drives a power control component, such as an N-channel MOSFET, and then continuously monitors inrush and over-current conditions during power-up and power-down. During operation, the hot-swap device acts as an analog comparator that constantly monitors the voltage of the external supply. When the voltage in the external power supply exceeds the setpoint of the controller, the controller will enable the internal high-side driver and enable the powered component to operate. When the voltage of the external supply drops below the setpoint, the controller will disable the internal high-side driver and shutoff the powered component.

The LTC4242IUHF#TRPBF also features a full-featured overcurrent detect and control. This feature prevents damage resulting from current surges. The device also features an adjustable inrush current limit on startup, as well as an output voltage for monitoring the device and other external components in the system. Additionally, the device features fault protection to alert the user when an overcurrent condition occurs.

Overall, the LTC4242IUHF#TRPBF is a versatile Hot Swap controller that helps you manage difficult power up and power down conditions when adding or removing or replacing power supplies to a system. It provides advanced monitoring, protection, and control functions for hot-swap applications, with inputs that are ±10V tolerant and can support up to 500mA of pull-up current. With the device’s wide range of features, the LTC4242IUHF#TRPBF is perfect for high-current, rugged and reliable applications.

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