300 mA LDO with 68 dB PSRR at 1 kHz
The TLV70330DBVR is a fixed 3 V output LDO from Texas Instruments, delivering up to 300 mA continuous current. The 68 dB PSRR at 1 kHz means ripple from a switching pre-regulator is attenuated by a factor of ~2500 at that frequency, keeping the output clean for noise-sensitive loads like analog sensor front-ends or ADC reference rails.
Dropout and quiescent current
Maximum dropout is 0.375 V at the full 300 mA load — the input rail needs to stay above 3.375 V to maintain regulation across temperature and process corners. Quiescent current is 55 µA typical, rising to 370 µA max under supply current; this makes the part suitable for battery-powered equipment where the regulator's own draw must stay below a few hundred microamps.
Housed in the SOT-23-5 (SC-74A) package, the TLV70330DBVR is a surface-mount device with a 1.6 mm × 2.9 mm footprint — a common outline for portable and space-constrained boards.
Protection and control features
Built-in over-current protection and a current-limit control feature guard the regulator and downstream circuitry against short-circuit events. The output is fixed at 3 V with positive configuration and a single regulator channel.