LTC4223IDHD-2#TRPBF

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Power management integrated circuits (PMICs) are integrated circuits that regulate electricity to a system. Specifically, they are used to control the power delivery and enable safe system operation. Hot Swap Controllers are PMICs that enable current level control and system protection when supplying power to an external system over a hot plug connection. The LTC4223IDHD-2#TRPBF is an optimal Hot Swap Controller, offering precise voltage programming of a Hot Swap N-channel MOSFET with fast current limiting and instantaneous foldback protection.

The LTC4223IDHD-2#TRPBF is a Hot Swap controller designed for providing precise control of the external load turn-on and the turn-off voltages, precise limiting of inrush current, and for limited inrush current with a programmable foldback disconnection. This device features a programmable current limit set with a single external resistor and a programmable output voltage set with two external resistors. This IC is designed for high-speed connection and disconnection from a bus without power sequencing and also has a low operating voltage and high-performance current regulating capabilities.

The LTC4223IDHD-2#TRPBF is suitable for applications such as those in industrial, automotive and portable electronic system, where hot-swap of a control power supply is required, as well as providing dynamic current limiting and fast disconnection of any no-load and short-circuit condition. One application example is the design of hot swap Interface and power distribution for board level applications. This device can ensure safe disconnection of the external load from the system bus without damaging or damaging the power supply.

The LTC4223IDHD-2#TRPBF works by monitoring the fault currents through an external N-channel MOSFET and operating a programmable current limit. When the exceeding of the limit is detected, the device then decreases the output voltage and inhibits further current flow, thereby resulting in a fast and safe disconnection of the external load. This continuous monitoring enables both current limiting and fault protection to be accomplished.

In addition to current limiting, the device also offers overtemperature protection, under voltage lockout, and a power-good function that indicates when the external system is live, as shown in Figure 1. This device also features optimal on-resistance and low quiescent current, further improving system efficiency and helping to reduce energy consumption during operations.

The LTC4223IDHD-2#TRPBF is a feature-rich, reliable and cost-effective Hot Swap Controller that enables precise control of the external load turn-on and the turn-off voltages, precise limiting of inrush current, and for limited inrush current with a programmable foldback disconnection. This innovative design provides the utmost protection for external systems, helping to maximize system performance, minimize power loss, and enhance operational reliability.

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