What the 200mA current limit means for your rail
The MAX4789EUK+T is a current-limiting IC from Analog Devices that sits between a 2.3V to 5.5V supply rail and a downstream load, clamping the output to 200mA maximum. This is a hard current limit, not a foldback — the part holds the current at the threshold rather than dropping it to near-zero, which means a capacitive load on the output charges at the full 200mA rate until the voltage rises, then the limit engages. The 200mA ceiling protects the upstream regulator or battery from a short on the output trace without blowing a fuse.
Package and board-fit for the SOT-23-5
Housed in a 5-lead SOT-23-5 (SC-74A) package, the MAX4789EUK+T occupies a footprint roughly 3.0 mm × 3.0 mm on the board. The surface-mount body suits automated pick-and-place assembly; the lead pitch is 0.95 mm, which routes cleanly on a two-layer board without micro-vias.