Fixed 1V rail for low-voltage cores
The TLV71310PDBVT is a fixed 1V output LDO from Texas Instruments, delivering up to 150 mA from a maximum 5.5V input rail. Its 75 µA quiescent current keeps the standby draw low enough for battery-powered sensor nodes or always-on microcontroller rails where every microamp counts. The enable pin lets the system shut down the regulator entirely when the load is idle, cutting the supply current to near zero.
PSRR and noise rejection for sensitive analog rails
Power supply rejection ratio is specified at 70 dB at 100 Hz, rolling to 55 dB at 1 MHz — this means the regulator attenuates ripple from a switching converter by a factor of several thousand at line frequencies, dropping to a factor of about 560 at 1 MHz. For a 100 mV p-p ripple on the input at 100 kHz, the output sees roughly 180 µV p-p — clean enough to power a 12-bit ADC reference without additional post-filtering in many cases. The dropout voltage is 1.02V maximum at the full 150 mA load, so the input rail must stay at least that margin above 1V to maintain regulation.
Protection suite and temperature range
On-chip protection includes over-current, over-temperature, reverse polarity, short-circuit, and under-voltage lockout — the regulator survives a miswired supply or a dead-short output without external clamp diodes. Housed in a SOT-23-5 (SC-74A) package, the footprint is 2.9 mm × 1.6 mm — the limiting factor for board area is the input/output decoupling capacitors, not the regulator itself.
ROHS3 compliant, with no restricted substances above the threshold — the part ships into EU, UKCA, and other regulated markets without exemption paperwork.