View max8869 datasheet:

19-1692; Rev 0; 8/00 1A, MicroCap, Low-Dropout, Linear Regulator General Description Features The MAX8869 low-dropout linear regulator operates ¦ Guaranteed 1A Output Current from a +2.7V to +5.5V input and delivers a guaranteed ¦ Stable with COUT = 1µF 1A load current with a low 200mV dropout. The high- accuracy (±1%) output voltage is preset at +5V, +3.3V, ¦ Low 200mV Dropout at 1A +2.5V, +1.8V, or +1.0V or is adjustable from +0.8V to ¦ ±1% Output Voltage Accuracy +5V with an external resistor-divider. Preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V The MAX8869 uses MicroCap™ technology and and Adjustable from +0.8V to +5.0V requires only a small 1µF output capacitor for guaran- teed stability. An internal PMOS pass transistor allows ¦ 54dB PSRR at 100kHz low 500µA suppl