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Analog Devices Inc. LT4200 50A Hot-Swap E-Fuse is an integrated solution for hot-swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a hot-swap controller, power MOSFET, and current sense resistor into a single package for small form-factor applications. The MOSFET safe operating area is production tested and guaranteed for the stresses in hot-swap applications.
The Analog Devices Inc. LT4200 allows 50A of continuous operation at up to 85°C ambient temperature. It provides separate inrush current control and a ±12% accurate 57A current limit with output-dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Additional features include a current monitor output for ground-referenced current sensing and a MOSFET temperature monitor output. Thermal limit, overvoltage, undervoltage, and power good monitoring are also provided.
