LTC4221IGN#TRPBF

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Power management integrated circuits (PMICs) are widely used in many different applications and serve as the core of many electronic devices. PMICs enable power delivery, switching, and management for a variety of items, including electronic systems and households. Hot swap controllers enable electronic products to be hot plugged into a live system, making them beneficial for automated assembly lines. One of the most popular hot swap controllers is the LTC4221IGN#TRPBF device.

The LTC4221IGN#TRPBF device is a Hot Swap controller from Linear Technology which regulates an inrush of current and voltage when a device is inserted into a live system. It features over-current, over-voltage and over-temperature protection, making it well-suited for use in harsh environments. This device is available in a 10-Lead MSOP package and is designed to handle up to 20A of on-state current. It can be used in an array of application fields such as servers, data centers, broadband access, telecom equipment, aerospace and defense, industrial systems, and instrumentation.

Working Principle

The LTC4221IGN#TRPBF device is designed to protect a circuit against a large inrush of current and voltage. It features an integrated Gate Driver and NMOS pass element which enables the device to control a large load current during a hot swap insertion. After initial insertion, the device monitors the input voltage of its load circuit and limits the maximum input current to minimize power dissipation. The LTC4221IGN#TRPBF also features an integrated Startup Controller which controls the activation sequence and hot swap insertion of the load current.

The LTC4221IGN#TRPBF device also features a Monitoring Output Pin (MOP) which can be used to monitor the inrush current state. If a over-current or over-voltage condition occurs, the MOP will indicate a fault to the external system. Additionally, the LTC4221IGN#TRPBF device is equipped with two enable functions which can be used to control the enabled state of the load circuit.

Conclusion

The LTC4221IGN#TRPBF has a maximum current rating of 20A, making it well-suited for use in high-current applications. Its integrated Gate Driver and NMOS pass element enable the device to control large load currents during hot plugging, while its integrated Startup Controller, Monitoring Output Pin, and Enable functions provide the user with additional control. This device is available in an array of application fields, such as servers, data centers, broadband access, telecom equipment, aerospace and defense, industrial systems, and instrumentation.

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