Hi all
Would you mind if we ask bq24250?
Our customer has 4 board with bq24250.
<Condtion>
-When 1st board connected the battery(4.15V) to BAT pin, there is no output at SYS pin(approx 0.3V).
-When 2nd~4th boards connected each batterys(4.15V) to each BAT pin, there are output at SYS pin(approx 4.15V).
-After 1st board connected VIN to 5V(USB power), SYS pin started to output.
After then, 1st board removed the 5V(USB power) on VIN, SYS pin keep outputting 4.15V.
About 1st board, there is no supply, so it is not possible to confirm register setting.
We recognize that this situation return to initial(normal) condition by adding the voltage to Vin.
So, as the default setting of bq24250, could you give us the your assumption?
If you need more information(circuit), we will send you using private message.
Kind regards,
Hirotaka Matsumoto