What this LDO actually does
The TPS7A0322PDBVR is a single-channel, positive-output, fixed 2.2 V LDO from Texas Instruments, rated for 200 mA continuous output. It comes in a SOT-23-5 package and is surface-mount only.
On-chip protection includes over-current, over-temperature, and under-voltage lockout (UVLO). The UVLO keeps the output off until the input voltage rises above the threshold, which prevents the load from seeing a brown-out condition during startup. No derating needed up to the full 200 mA across that range, as long as the PCB copper area can sink the heat.