View lt1129 datasheet:

LT1129/LT1129-3.3/LT1129-5 Micropower Low Dropout Regulators with Shutdown DESCRIPTIO FEATURES The LT1129/LT1129-3.3/LT1129-5 are micropower low 0.4V Dropout Voltage dropout regulators with shutdown. The devices are ca- 700mA Output Current pable of supplying 700mA of output current with a drop- 50µA Quiescent Current out voltage of 0.4V at maximum output. Designed for use No Protection Diodes Needed in battery-powered systems the low quiescent current, Adjustable Output from 3.8V to 30V 50µA operating and 16µA in shutdown, make them 3.3V and 5V Fixed Output Voltages an ideal choice. The quiescent current does not rise Controlled Quiescent Current in Dropout in dropout as it does with many other low dropout Shutdown PNP regulators. 16µA Quiescent Current in Shutdown