LT4250LCN8

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The LT4250LCN8 is a controller for hot swap power architectures. It provides voltage and current limiting protection to a system when driving an AC or DC load. The device limits the inrush current of an AC load safely as well as controlling power sequencing and timing of a load. It also helps prevent damage from load contingencies, overtemperature conditions and overloading. By controlling the power delivered, it reduces power dissipation in the system and helps improve efficiency. The LT4250LCN8 operates in three modes: normal mode, startup mode, and fault mode. In normal mode, the device supplies power and monitors the Load Input Voltage (LIV). When VCC is between the UV and OV thresholds, the device passes power. In startup mode, the device switches in at the beginning of a hot plug or during turn-on. In fault mode, the device implements fault detection and auto-recovery functions. It monitors VCC and provides fault protection against overcurrent, overtemperature, overvoltage, undervoltage, and other faults.The LT4250LCN8 Hot Swap Controller has a variety of features to make power management easier. The N pin enables the device to turn on/off the load power. The PWRDN pin can be replaced by the OLG pin to perform a soft-start function that reduces the peak inrush current. In addition, the device has an adjustable slew rate and programmable soft-start to reduce stress on the power supply and components. The device also has an adjustable output voltage function for controlling the output voltage of the load.The LT4250LCN8 offers a wide operating temperature range from -40°C to +125°C and is available in SOT-23-8, TO-240-8 and MSOP-10 packages. It is RoHS compliant and lead-free.The LT4250LCN8 is well suited for use in a variety of applications, such as telecom and networking equipment, industrial systems, automotive applications, medical equipment, digital power supplies, and many other hot-swap applications. The device ensures reliability and safety by monitoring the power-supply voltage, current and temperature in the system, providing protection against current limiting, overvoltage, undervoltage and overtemperature conditions.In conclusion, the LT4250LCN8 is an ideal hot-swap controller for a wide range of applications. It offers a wide operating temperature range, adjustable output voltage, soft-start and fault detection/auto-recovery functions for reliable performance and increased system safety.

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