Input voltage: 2.5 V to 18 V (can be higher than, the same as, or lower than the 12 V output);Fixed 12 V output with 4% accuracy;Typical continuous output current: 200 mA (actual continuous output current depends on input voltage; see Typical Efficiency and Output Current section below for details);

• Pololu 12V Step-Up/Step-Down Voltage Regulator S10V2F12

Pololu 12V Step-Up/Step-Down Voltage Regulator S10V2F12Pololu