PSRR and load regulation for sensitive analog rails
The MAX8512EXK+T is a 120 mA adjustable positive-output LDO from Analog Devices in a 5-lead SC-70 package. Its headline spec is the PSRR: 72 dB at 1 kHz, rolling off to 46 dB at 100 kHz — this means it rejects switching-regulator ripple across the audio band and into the lower switching frequencies, making it a clean rail for analog front-ends or ADC reference supplies.
Dropout and quiescent current in battery-powered designs
Maximum dropout is 0.12 V at 120 mA load — the input rail needs only 0.12 V headroom above the programmed output to stay in regulation, so the regulator can squeeze usable voltage from a nearly depleted battery. Quiescent current is 90 µA, which keeps the self-consumption low enough for always-on sensor nodes that sleep between reads.
Package and integration footprint
Housed in an SC-70-5 (SOT-353) package, the part occupies about 2.0 mm × 2.1 mm on the board. The single regulator channel with Enable control and over-current/over-temperature protection means the external BOM is just input and output capacitors — no extra supervisor IC needed for basic fault handling.