3.1V fixed LDO for tight rails
Key protection features — over-current, over-temperature, reverse polarity, and under-voltage lockout — mean this part handles startup into a pre-biased output or a brief input dip without latching up. The 55 µA quiescent current and 370 µA max supply current suit battery-operated or always-on subsystems where every microamp counts.
PSRR is specified at 68 dB at 1 kHz for this 300 mA LDO.
Enable pin and sequencing
The enable pin (active-high) lets you gate the output with a logic signal. Pull it low to shut down the regulator into a near-zero quiescent state — useful for power-gating a sensor or radio between measurement cycles. Tie it to the input if you want the output on whenever input power is present.