LDO with 63 dB PSRR at 10 kHz — the noise-rejection floor for analog rails
The MAX8868EUK25-T is a fixed 2.5 V output LDO from Maxim Integrated, rated for 150 mA continuous output. Its 63 dB power-supply rejection ratio at 10 kHz means upstream switching noise at that frequency is attenuated by a factor of roughly 1400 — a figure that matters when this LDO powers a sensitive ADC or VCO rail fed from a noisy buck converter.
Dropout, quiescent draw, and protection set
Dropout is 0.165 V typ at 150 mA — at full load the input rail needs only 2.665 V to maintain regulation. Quiescent current is 180 µA, with a maximum supply current of 100 µA under light loads. The protection block covers over-current, over-temperature, reverse polarity, and short circuit; the enable pin lets a GPIO or supervisor shut the output off without a series PFET.
SOT-23-5 package and industrial temperature range
Housed in the SOT-23-5 (SC-74A) package, this LDO occupies roughly 3 mm × 3 mm of board area.
Active lifecycle, RoHS non-compliant — sourcing posture
Note the RoHS compliance flag: listed as RoHS non-compliant, so this variant is not suitable for assembly lines that require lead-free solder profiles unless exempted.