Hi Expert,
I am using BQ25606, but it seems to work abnormal.
When I only connect battery to BQ25606 but no external VBUS input, VREGN has no voltage output, and the system has no output;
When I connect external VBUS input to BQ25606 first, then connect battery, VREGN has a voltage of 5V output, and the system output is normal. However, at this time, if I remove VBUS, the system output is still there. Is this a normal behavior for BQ25606?
If it is a normal behavior for BQ25606, why the system can still get output without VBUS?
If not, what can cause to this issue?
Thank you!
Rachel