The document introduces ADM1171 Hot Swap Controller, which can safely remove and insert a printed circuit board from a live backplane.
The ADM1171 hot‑swap controller enables safe insertion and removal of printed‑circuit boards on a live backplane. It works with an external N‑channel MOSFET and provides adjustable analog current limiting via an external sense resistor. Features include soft‑start, automatic retry or latch‑off, and a current‑sense output (CSOUT) with a gain of 20.
Two variants are offered: the ADM1171‑1 with automatic retry on over‑current fault, and the ADM1171‑2 with latch‑off behavior. The device is supplied in an 8‑lead TSOT package and is intended for applications such as hot‑swap board insertion in line cards, RAID systems, and industrial high‑side switches.