View lt1120fb datasheet:

LT1120 Micropower Regulator with Comparator and Shutdown FEATURES DESCRIPTIO 40µ A Supply Current The LT®1120 is a combination micropower positive regu- 125mA Output Current lator and free collector comparator on a single monolithic 2.5V Reference Voltage chip. With only 40µ A supply current, the LT1120 can Reference Output Sources 2mA and Sinks 2mA supply over 125mA of output current. Input voltage range Open Collector is from 4.5V to 36V and dropout voltage is 0.6V at 125mA. Comparator Sinks 10mA Dropout voltage decreases with lower load currents. Also Logic Shutdown included on the chip is a class B output 2.5V reference that 0.2V Dropout Voltage can either source or sink current. A shutdown pin allows Thermal Limiting logic shutdown of the output. Available in 8-Lead DIP,