Active 1 A LDO with 54 dB PSRR at 100 kHz
The MAX8869EUE50+T is an active-production LDO from Analog Devices, rated for 1 A continuous output with a maximum dropout of 0.35 V at full load — the headroom between the input rail and the output must stay above 350 mV across load and temperature to keep regulation.
Output flexibility and protection
The output is configurable as adjustable or fixed 5 V (the fixed option is 5 V, with an adjustable range from 0.8 V up to 5 V), so a single BOM position covers both a regulated 5 V rail and a variable supply for post-regulation trimming. Built-in overcurrent, overtemperature, and short-circuit protection mean the regulator handles fault conditions without external crowbar or clamp circuitry — the thermal shutdown threshold prevents die damage during sustained overload. Control features include an enable pin for sequencing, a reset output for power-good indication, and a soft-start ramp that limits inrush current during turn-on — useful when the LDO feeds a capacitive load like a bank of bypass caps on a mixed-signal IC.
Sourcing and compliance
RoHS3 compliant per the ROHS3 standard, with no exemption conflicts for EU-market equipment.