View tk111xxcs-series datasheet:

TK111xxCS VOLTAGE REGULATOR WITH ON/OFF SWITCH FEATURES APPLICATIONS High Precision Output Voltage (± 1.5% or ± 50 mV) Battery Powered Systems Active High On/Off Control Cellular Telephones Very Low Dropout Voltage (VDROP = 103 mV at 100 mA) Pagers Very Good Stability: CL = 0.1 F is Stable For Any Type Personal Communications Equipment Capacitor with VOUT 1.8 V (IOUT > 0.5 mA) Portable Instrumentation Excellent Ripple Rejection Ratio (80 dB @ 1 kHz) Portable Consumer Equipment Very Low Quiescent Current (IQ = 63 A at IOUT = 0 mA) Radio Control Systems Peak Output Current is 320 mA Toys SOT23-5 Package Wide Operating Voltage Range (1.8 V ~ 14 V) Reverse Bias and Overcurrent Protection The TK111xxC circuit features very high stability. An outp