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.
Protection features and temperature range
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. The operating junction temperature range is -40°C to 125°C, so this part is comfortable in an outdoor telecom enclosure, an engine bay, or a hot industrial cabinet. No derating needed up to the full 200 mA across that range, as long as the PCB copper area can sink the heat.
Enable pin and control
A dedicated Enable pin lets you shut down the regulator to near-zero current draw — the 300 nA quiescent drops to effectively zero when the enable pin is pulled low.
Sourcing and lifecycle
The TPS7A0322PDBVR is listed as Active with ROHS3 compliance. It is available through independent distribution; we source and quote it to order against an RFQ.