300 mA LDO with 1.5 V fixed output and wide PSRR band
The TPS7A2015PDBVR: Dropout voltage is 205 mV maximum at the full 300 mA load, meaning the input must stay at least that much above 1.5 V to maintain regulation across temperature and process corners. Quiescent current is 15 µA typical, which keeps the part viable for always-on or battery-backed rails where the regulator's own draw must not dominate the standby budget.
PSRR profile and noise rejection for post-switcher rails
Power-supply rejection ratio (PSRR) is 65 dB at 100 Hz, rolling off to 40 dB at 1 MHz. This profile tells a board designer how much ripple from a preceding buck converter gets attenuated — at 100 kHz, a typical switching fundamental, the attenuation is still above 40 dB, which cleans up the rail for sensitive analog or RF stages. The enable pin and internal soft-start give the system architect control over sequencing and inrush current on the 1.5 V rail.
Protection set and temperature grade
Built-in over-current, over-temperature, and under-voltage lockout (UVLO) protections mean the regulator can survive output shorts and thermal overloads without external clamp diodes or supervisory ICs. Operating junction temperature range is -40 °C to 125 °C, qualifying it for industrial enclosures and under-hood automotive environments where the ambient near the PCB can exceed 85 °C.
Housed in a 5-pin SOT-23 (SC-74A) package, the TPS7A2015PDBVR shares the same 0.95 mm pitch footprint as countless other SOT-23-5 LDOs, making it a drop-in candidate for existing layouts with a 1.5 V fixed output requirement. Available in tape and reel or cut tape options for both prototyping and production reels.