View lt1110 datasheet:

LT1110 Micropower DC-DC Converter Adjustable and Fixed 5V, 12V FEATURES DESCRIPTIO The LT1110 is a versatile micropower DC-DC converter. Operates at Supply Voltages From 1.0V to 30V The device requires only three external components to Works in Step-Up or Step-Down Mode deliver a fixed output of 5V or 12V. The very low minimum Only Three External Off-the-Shelf Components supply voltage of 1.0V allows the use of the LT1110 in Required applications where the primary power source is a single Low-Battery Detector Comparator On-Chip cell. An on-chip auxiliary gain block can function as a low User-Adjustable Current Limit battery detector or linear post regulator. Internal 1A Power Switch Fixed or Adjustable Output Voltage Versions The 70kHz oscillator allows the use of surfa