250 mA LDO with 90 dB PSRR for noise-sensitive rails
The LP5907MFX-4.5/NOPB: The 0.25 V maximum dropout at the full 250 mA load keeps the output in regulation with only 250 mV of headroom above 4.5 V, so a 4.75 V input rail is sufficient.
Quiescent current and thermal range for always-on designs
Typical quiescent current is 25 µA, rising to a maximum supply current of 425 µA — the low Iq floor makes this LDO a candidate for battery-powered or always-on sensor nodes where the regulator's own draw must stay below the microamp range during sleep. Built-in over-temperature and short-circuit protection allow the device to survive output faults without external clamp diodes — the enable pin (active high) lets a system controller gate the output rail for sequenced power-up.