LTC1645CS#TRPBF

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Hot Swap Controllers (HSCs) are power devices designed to provide inrush current and over-current protection of systems, boards and boards connected to their systems. The LTC1645CS#TRPBF, a HSC device manufactured by Linear Technology, is a versatile controller for hot swapping bus-powered applications. It includes an optimized solution for configuring hot swapping circuits for any current level. The design of the LTC1645CS#TRPBF allows boards up to 24V to be connected and disconnected from a power source, typically a laptop USB port, without shutting down the system. It includes a logic-controlled turn-on sequence, current limiting, current measurement, fault detection and status indication, making it suitable for a wide range of applications such as USB powered dock connectors, high-density telecommunication systems, shared computing clouds and energy-efficient industrial applications. The LTC1645CS#TRPBF operates in two general modes. The first mode is constant current operating mode, which uses an external sense resistor to sense the load current and provides an adjustable overcurrent limit. The second mode is high-side current monitor operating mode, which uses an internal sense resistor to measure the load current, providing adjustable overcurrent and over-temperature limits. Both modes feature adjustable current limit and overtemperature limit to ensure maximum power dissipation is not exceeded. The LTC1645CS#TRPBF features two output pins: an enable pin and an active-low open circuit pin. The enable pin is used to turn the component on or off, while the active-low open circuit pin is used to detect an open circuit event and to reset the component. Both pins can be used for remote or manual control. In addition, the LTC1645CS#TRPBF includes current measurement, overrun detection and accurate current limit protection, making it suitable for applications requiring precise control. The LTC1645CS#TRPBF is designed to operate with a wide range of current levels and has an extended temperature range (-40°C to +125°C). Its high power switching ability make it ideal for hot swapping applications. The device is available in a 6-lead SOT-23 package and is RoHS compliant. In conclusion, the LTC1645CS#TRPBF is a versatile and cost-effective power controller for hot swapping applications. It offers an optimized solution to configure hot swapping circuits for any current level and includes current sensing, over-current and over-temperature protection. The device has a wide operational temperature range and is available in a small SOT-23 package.

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