I've been using a MCP73811 to charge a single LiPo cell with great success. It is connected with a MOSFET so that power to the main circuit is cut whenever charging is in progress. I'd like to simplify the circuit by removing this protection.
My question is - what would happen if I tried to charge a LiPo while it is in use?
I'm guessing it's not an issue. The MCP73811, supplying 4.2V and constant current (450mA) will win in an analog OR with the battery voltage (3.0-4.2V, depending on charge). So the charger would supply the first 450mA and then the battery would add any more mA draw.
Anything to watch out for?
My question is - what would happen if I tried to charge a LiPo while it is in use?
I'm guessing it's not an issue. The MCP73811, supplying 4.2V and constant current (450mA) will win in an analog OR with the battery voltage (3.0-4.2V, depending on charge). So the charger would supply the first 450mA and then the battery would add any more mA draw.
Anything to watch out for?