Ripple Blocker — PSRR bandwidth and the 2.8 V rail
The MIC94310-MYMT-TR is a single-output, positive fixed-output LDO from Microchip's Ripple Blocker™ series, delivering 200 mA at 2.8 V from a 3.6 V max input rail. Its defining spec is the PSRR curve: 85 dB at 100 Hz rolling off to 50 dB at 10 MHz — this is not a generic LDO; it is designed to clean up switching noise from a downstream DC-DC converter or a noisy input bus, especially in the 100 kHz to 10 MHz band where many switchers radiate ripple. The 250 µA quiescent current is moderate; not ultra-low-power, but acceptable for always-on rails in industrial or automotive modules where the load current dominates the budget.
Package and thermal: 4-TDFN exposed pad
Control is via a single Enable pin; the part also integrates over-current and over-temperature protection.
Lifecycle and sourcing posture
ROHS3 compliant (EU Directive 2015/863).