TPS79133DBVR

TPS79133DBVR is the 3.3 V fixed-output code of TI's TPS791 ultra-low-noise LDO family: 100 mA of output current from a 2.7 V to 5.5 V input, with ±2% output accuracy, a typical dropout of only 50 mV (90 mV max) at full load and 73 dB of PSRR at 10 kHz — the profile wanted on noise-sensitive analog, RF and data-converter rails. Output noise is 15 µVRMS with the specified bypass capacitor, ground current is a typical 170 µA, the enable input supports clean power sequencing, and the regulator is stable with a 1 µF ceramic output capacitor in a five-pin SOT-23. TI lists this exact ordering code as ACTIVE in the current datasheet orderable addendum. Selection advice: DBVR is the 3,000-piece tape-and-reel code (DBVT is the 250-piece reel), and the 33 is the fixed 3.3 V output — other TPS791 codes set different voltages and are not substitutes on a qualified BOM. Parameters verified against TI documentation.