Demonstration circuit 1798A is a Dual Output, Dual Phase 5A Synchronous Buck Converter featuring the LTC3869IGN-2. It provides 2.5V/5A and 3.3V/5A outputs. The input voltage range is 4.5V to 26V. DC1798A-A has an on-board sense resistor for current feedback, while the DC1798A-B is configured with a DCR sense circuit that allows the converter to use the inductors DCR as the sense element instead of the on-board sense resistors to save cost and board space and improves efficiency.