Recom Power R-78B3.3-2.0.
DC-DC CONVERTER, 3.3V, 2A; Power Supply Approvals:ITE; No. of Outputs:1 Output; Output Power Max:6.6W; Output Current Max:2A; Product Range:R-78Bxx-2.0 series; DC / DC Converter Mounting:Through Hole; Input Voltage DC Min:4.75V