Active production, AEC-Q100 qualified
The TPS73201QDRBRQ1 is an automotive-grade LDO from TI's TPS732xx family, listed as Active in production with ROHS3 compliance.
250 mA output with 150 mV dropout — headroom budget
Rated for 250 mA continuous output with a maximum dropout voltage of 0.15 V at full load. That means the input rail must stay at least 150 mV above the programmed output voltage across the load range — a 3.3 V output needs at least 3.45 V at the input pin, not just the nominal 3.3 V. The input max is 5.5 V, so a 5 V rail with 10 % tolerance (4.5–5.5 V) gives plenty of headroom. Output is adjustable from 1.2 V up to 5.5 V using an external resistor divider. The fixed 1.2 V version is also available under the same order code — the datasheet's adjustable/fixed designation means the device can be configured either way depending on the feedback pin connection.
PSRR profile — 58 dB at 100 Hz, 37 dB at 10 kHz
Power supply rejection ratio is 58 dB at 100 Hz, rolling off to 37 dB at 10 kHz. This covers the dominant noise bands from a 50/60 Hz mains ripple and the switching fundamental of a typical DC-DC converter upstream.
Quiescent current and protection suite
That is moderate for an automotive LDO — not the ultra-low-Iq class, but acceptable for always-on modules where the load current is in the tens of milliamps. The protection block includes over-current, over-temperature, short-circuit, and reverse polarity — the reverse polarity clamp is a differentiator versus some peers that omit it.
8-SON exposed-pad package — thermal and footprint
Reflow profile follows standard lead-free solder (260°C peak). No moisture sensitivity level is stated in the record, but an 8-SON with exposed pad typically requires MSL 1 or 2; confirm with the lot date code if the parts have been in storage.