Hello
We are implementing the bq24040 to charge a Lion 2150mAh cell (BMS included). the chip is configured to deliver the maximum charge current 1A at CC mode, the schematic (SCH) is shown below:
When connected to the cell, the charging current is dropping along the charging process. It looks like, for some reason, the charger is limiting the charging current.
Cell charged with external power supply unit:
Cell charged with bq24040:
a) Is this normal?
b) If negative, how can a fix this issue?
Thanks in advance