The ADP1111 is part of a family of step-up/step-down switching regulators that operates from an input voltage supply of 2 V to 12 V in step-up mode and up to 30 V in step-down mode. The ADP1111 can be programmed to operate in step-up/stepdown or inverting applications with only 3 external components. The fixed outputs are 3.3 V， 5 V and 12 V; and an adjustable version is also available. The ADP1111 can deliver 100 mA at 5 V from a 3 V input in step-up mode， or it can deliver 200 mA at 5 V from a 12 V input in step-down mode. Maximum switch current can be programmed with a single resistor， and an open collector gain block can be arranged in multiple configuration for low battery detection， as a post linear regulator， undervoltage lockout， or as an error amplifier. If input voltages are lower than 2 V， see the ADP1110.