LTC4242IG#TRPBF

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The LTC4242IG#TRPBF is a Hot Swap Controllers PMIC integrated circuit, capable of managing the supply of an on-board load with an external power source. Hot Swap Controllers are circuit components that are specifically designed to protect electronics such as motherboards and other components from voltage transients. Operated at the power supply level, they have the potential to prevent costly damage and accelerate the availability and safely of the system.

The LTC4242IG#TRPBF is designed to provide low resistance controlled in-rush current, fault current limit and fast turn-off in Hot Swap applications. It provides enhancements to traditional Hot Swap designs with lower power dissipation, an adjustable current limit, a wide operating voltage range and integrated undervoltage and overvoltage protection. It features an easy to use activation and deactivation circuit with external components to set up the current limit. It also offers two independent status bits as well as preconfigured output voltage comparators, providing additional flexibility and safety.

Internally, the device consists of a power MOSFET, current sense circuit and a control logic block. When the system is activated and the voltage across the MOSFET is such that the gate voltage rises above the threshold voltage, a controlled current passes through the MOSFET. This current is sensed by the current sense circuit within the device. The control logic then acts upon this feedback to maintain the current at the limits set by the external components. In case of a fault condition, the control logic will detect this and immediately activate the MOSFET switch to disconnect the load from the source. Furthermore, the device also features overcurrents peaks and short-cycles limiting to protect the load from damage.

The LTC4242IG#TRPBF is an ideal solution for Hot Swap applications, requiring fast and reliable current limit regulation. Especially suited for programming, debugging and other testing applications, it offers a low standby current and a wide operating temperature range, making it suitable for long-duration use. The LTC4242IG#TRPBF is a versatile and cost-effective choice for Hot Swap controllers. It is available in an extremely small SOT-23 package and is designed to offer robust performance and reliability under harsh environmental conditions.

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