The PM6764 from STMicroelectronics is a DC to DC Converter with Input Voltage 10.8 to 13.2 V, Output Voltage 1 0.52 to 2.3 V, Output Current 1 120 mA, Supply Voltage 4.75 to 5.25 V. Tags: Surface Mount, Buck/Step down. More details for PM6764 can be seen below.