https://www.electronicdesign.com/technologies/power/article/21796275/single-cell-regulated-charge-pump-draws-low-quiescent-current
A charge pump (or Q pump) uses a flying-capacitor architecture to boost a single cell's voltage to a regulated 2.5V, yet operates at low quiescent current....
single cellcharge pumpquiescent currentregulateddraws
https://www.ti.com/video/5844569747001
Wilson explores how LDOs are a simple solution to help boost the run time of any battery-driven device - for a few more seconds, minutes, hours or even days.
quiescent currentldobasicsvideoti