Pololu 5V Step-Up Voltage Regulator U3V12F5 Input voltage: 2.5 V  VOUT Fixed 5 V, 9 V, or 12 V output with 4% accuracy 1.4 A switch allows for input currents up to 1.4 A 2 mA typical no-load quiescent current integrated over-temperature shutoff, small size: 0.515  0.32  0.1 (13  8  3 mm)