What this adjustable LDO brings to a power rail
The Microchip MIC5353YMT-TR is a single-output positive adjustable LDO regulator delivering up to 500 mA from a 1.25 V to 5.5 V output range, with a maximum input of 6 V. Key features include an enable pin for shutdown control, over-current and over-temperature protection, and a quiescent current of 175 µA. The dropout voltage is specified at 0.35 V maximum at the full 500 mA load.
PSRR at 1 kHz — what 60 dB means for noise-sensitive rails
The MIC5353YMT-TR lists a power-supply rejection ratio of 60 dB at 1 kHz. That translates to roughly 1 mV of ripple on the output for every 1 V of ripple on the input at that frequency.
Package and footprint — 6-TMLF with exposed pad
The device is supplied in a 6-UFDFN exposed-pad package, also designated 6-TMLF, measuring 1.6x1.6 mm. Surface-mount assembly is standard; the Tape & Reel option (TR suffix) is the reeled variant for automated pick-and-place.