View max8867 datasheet:

19-1302; Rev 2; 3/01 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description ____________________________Features The MAX8867/MAX8868 low-noise, low-dropout linear ¦ Low Output Noise: 30µVRMS regulators operate from a 2.5V to 6.5V input and deliver ¦ Low 55mV Dropout at 50mA Output up to 150mA. Typical output noise for these devices is (165mV at 150mA output) just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the ¦ Low 85µA No-Load Supply Current range of 2.5V to 5.0V, in 100mV increments. The ¦ Low 100µA Operating Supply Current MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin. (even in dropout) Designed with an internal P-channel MOSFET pass