Tool/software:
Hello team,
Good day. My customer is having issues setting the fuel gauge to shutdown mode. This IC is used on the battery pack side of e-cigar and it is noticed that if customer remove the Battery Pack BAT+ from electronics within 10 secs after sending the shutdown command, shutdown will be successful. Otherwise, shutdown is not successful and customer still can perform I2C communication with the Fuel Gauge via Battery Management Studio. Pack has no voltage output though. Please note that ENAB is floating and not pull down. Measured ~3.7V at this pin. No charging source when customer send this command down. Does the load on the Battery Pack BAT+ affect the Shutdown? Is there a minimum load current we must adhere to for the Shutdown to be successful.
Below is the brief scenarios that observed at customer side.
- Shutdown command is send over.
- Fuel Gauge did not shutdown when the battery is attached to our PCA beyond 10 secs after sending shutdown command and there is no charging source.
- Fuel Gauge can shutdown when the battery is detached from our PCA after sending shutdown command, within the 10 secs.
- Fuel gauge is deemed failed to shutdown as I2C comms is still possible and there is no output at the Pack Terminal.
- Can load current block the process of shutdown?
