The LTC4233 and LTC4234 are integrated solutions for Hot Swap™ applications that allow a board to be safely inserted and removed from a live backplane. The parts integrate a Hot Swap controller, power MOSFET, and current sense resistor in a single package for small form factor applications.
The MOSFET Safe Operating Area (SOA) is production tested and guaranteed for the stresses in Hot Swap applications. These products provide separate inrush current control and an 11% accurate 11.2A current limit with output dependent foldback. The current limit threshold can be adjusted dynamically using the ISET pin. Watch this video from Analog Devices to learn about additional features including a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output, and why SOA is important for Hot Swap applications.