What this LDO is and where it fits
The Texas Instruments TPS72201DBVR is a single-output, adjustable positive LDO regulator rated for 50 mA continuous output. It comes in a 5-pin SOT-23-5 surface-mount package and operates over the full -40°C to 125°C temperature range. The enable pin lets you shut down the output for power sequencing or sleep modes, and the built-in protection covers over-current, over-temperature, and reverse polarity — useful when the input rail might see a miswired battery or a hot-swap glitch.
PSRR and ripple rejection
The 48 dB PSRR at 100 Hz tells you this LDO knocks down line-frequency ripple. If your input comes from a rectified AC supply or a switching pre-regulator with 100/120 Hz ripple, the TPS72201DBVR cleans it up enough for many analog and RF bias rails. Not a high-PSRR part for sensitive audio or precision ADC supplies, but adequate for general-purpose low-noise rails.
Lifecycle and sourcing
The TPS72201DBVR is listed as Active and ROHS3 compliant.
