Fixed 5V rail, 200mA — the selection mistake this part avoids
The MAX8881EUT50+T is a fixed 5V output LDO from Maxim Integrated, delivering up to 200mA in a SOT-23-6 package. The 0.2V dropout at 50mA means a 5.2V input holds regulation through mild supply dips — useful when the 5V bus comes from a pre-regulator or a battery that sags under load. Protection coverage includes over-temperature, short-circuit, and reverse polarity, the last of which saves an external Schottky diode on the input and simplifies the BOM for single-supply designs.
Dropout and quiescent — the numbers that decide the rail budget
Dropout is specified at 0.2V max with a 50mA load. For a 200mA full-load condition the dropout will be higher — the datasheet curve (not reproduced here) is the reference — but the 50mA point is representative of the sensor or MCU rail this part typically feeds. The 10 µA quiescent current is the no-load draw; it climbs slightly with load but stays low enough that a 5V rail powered by a coin cell or backup battery sees negligible drain. If your design idles most of the time and wakes briefly to sample or transmit, this LDO keeps the standby budget tight.
ROHS3 compliant.