The STBB1-AXX from STMicroelectronics is a DC to DC Converter with Input Voltage 2 to 5.5 V, Output Voltage 1 1.2 to 5.5 V, Output Current 1 1000 mA, Operating Temperature 150 Degree C, Storage Temperature -40 to 150 Degree C. Tags: Surface Mount, Buck-Boost. More details for STBB1-AXX can be seen below.