Hello,
We are starting to see an issue in production where the bq24171 battery charger will continuously cycle up and down (i.e. Blink) at approximately 1 sec - 1/2 sec as soon as the external battery charger is plugged in. Table 3 in the datasheets lists the reasons the STAT pin will blink under the following conditions:
Charge suspend
Input overvoltage - Have verified this is not the cause
Battery overvoltage - Have verified this is not the cause
Timer fault
Battery absent
Is the Battery absent condition caused by not sensing a within range voltage on the TS pin? (This could be caused by an open connection on the battery pack NTC lead)
I was able to create the symptom by cutting the NTC lead on our battery pack. If if jumper the NTC leads together, the Blinking stops, If I open it up, it starts blinking again.
How can I test to see if this is being caused by a Charge suspend or Timer fault issue? Is there anything else I should be investigating?
Thank you, John
