The Microchip MCP1824T-2502E/OT is a single-output positive LDO that delivers a fixed 2.5V output at up to 300mA continuous. The 0.32V maximum dropout at full load means the input rail must stay above 2.82V to maintain regulation — a 3.3V bus with a diode drop or a 3.0V battery near end-of-life both leave enough headroom. Quiescent current is 220 µA typical, which keeps standby drain low for always-on peripherals in battery-operated equipment. The enable and power-good control features let the system sequence the rail and monitor its state without an external supervisor.
The protection set includes over-temperature shutdown, short-circuit current limiting, and under-voltage lockout (UVLO), so the output stays clean during brownout conditions on the input rail. The SOT-23-5 package (SC-74A, SOT-753 footprint) is a compact surface-mount outline that fits tight PCB layouts. The 55 dB PSRR at 100 Hz is the figure that matters when the LDO follows a rectified mains supply or a switching pre-regulator — it attenuates 100/120 Hz ripple by a factor of about 560, enough to keep noise off a sensitive analog or RF rail.