Pololu Pololu 5V Step-Up / Step-Down Voltage Regulator S9V11F5

Input voltage: 2 V to 16 V (note: this regulator requires 3 V to start, but it can operate down to 2 V after startup) Fixed 5 V output with +5/-3% accuracy Typical maximum continuous output current: 1.5 A Power-saving feature maintains high efficiency at low currents Integrated over-temperature and short-circuit protection