View rp130x-series datasheet:

RP130x SERIES LOW NOISE 150mA LDO REGULATOR NO.EA-173-131031 OUTLINE The RP130x Series are CMOS-based positive voltage regulator ICs with high ripple rejection, low dropout voltage, high output voltage accuracy and extremely low supply current. Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage setting, a short current limit circuit and a chip enable circuit. These ICs have an excellent low supply current performed by CMOS process, moreover they perform with low dropout voltage due to built-in low ON-resistance. A chip enable function prolongs the battery life. The input transient response, the load transient response and the ripple rejection have been improved in the RP130x Series compared with the conventional p