View ap130-series datasheet:

AP130 300mA Low Dropout (LDO) Linear Regulator Features General Descriptions - Input voltage range is up to 7V The AP130 is a 300mA, fixed output voltage, low - Dropout voltage 400mV at 300mA output current dropout linear regulator. The Device includes pass - Guaranteed 300mA output current. element, error amplifier, band-gap, current-limit and - Internal RON =1.5Ω PMOS draws no base current thermal shutdown circuitry. The characteristics of - Low quiescent current 50µA low dropout voltage and less quiescent current - Output voltage 2% accuracy, 1.5V to 5V with 0.1V make it good for some critical current application, step for example, some battery powered devices. The - Fast transient response typical quiescent current is approximately 50µA - Go