dc2069a DC2069A DC2069A LT8490 Demo Board | High Efficiency MPPT Buck-Boost Battery Charger Controller 17V To 54V Up To 200W Solar Panel VIN. 12V SLA Battery @ Up To 16.6A Charge Current Demonstration circuit 2069A features LT8490, a high performance buck-boost converter that implements an MPPT function and flexible charging profiles suitable for most battery types such as flooded and sealed lead acid batteries and Lithium-Ion batteries, and can operate from input voltages above, below or equal to the battery voltage.