View s1170-series datasheet:

Rev.3.0_02 HIGH RIPPLE-REJECTION AND LOW DROPOUT HIGH OUTPUT CURRENT S-1170 Series CMOS VOLTAGE REGULATOR The S-1170 Series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on CMOS technology. A built-in low on-resistance transistor provides a low dropout voltage and large output current, a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor, and a built-in thermal shutdown circuit prevents damage caused by the heat. An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the conventional CMOS process, a larger variety of capacitors are available, including small ceram