The LTC4211IS8#PBF is a Hot Swap controller with active limit, manufactured by Analog Devices. It is specifically designed to safely power up and power down circuits containing components sensitive to inrush currents or voltages. It combines current limit, voltage limit and circuit breaker functions with a P-channel MOSFET in a tiny 8-lead SSOP package to make the system-level design of boards containing hot pluggable loads simpler and safer. The IC features an adjustable 0.8A current limit, adjustable active fault threshold point, adjustable frequency foldback current limit, adjustable fast turn-on voltage limit, a logic-controlled circuit breaker, and a power OK output. The design of the LTC4211 optimizes the efficiency of the system and minimizes risk in a few simple design steps.