i want to build a charger to charge two 18650 batteries connected in series with 2600mAh
these two 18650 batteries feed a DC-DC-buck which then feeds 3.3v to circuit.
I want to use the following circuit from the datasheet of LM3420 , but how can i isolate the battery from the DC-but how can I isolate the battery from
the DC-buck and have the adapter feed the DC buck when pluged in and also be charging the battery ?
