The PUB0312D2B from Flex Power Modules is a DC to DC Converter with Input Voltage 2.97 to 3.63 V, Output Voltage 1 12 V, Output Current 1 0.84 A, Output Power 2000 mW, Output Voltage 2 -12 V. Tags: Through Hole, Buck-Boost. More details for PUB0312D2B can be seen below.