The LP3872/LP3875 series of fast ultra low-dropout linearregulators operate from a +2.5V to +7.0V input supply. Widerange of preset output voltage options are available. Theseultra low dropout linear regulators respond very quickly tostep changes in load, which makes them suitable for lowvoltage microprocessor applications. The LP3872/LP3875are developed on a CMOS process which allows low quiescentcurrent operation independent of output load current.This CMOS process also allows the LP3872/LP3875 to operateunder extremely low dropout conditions.