This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hello
Question.
Default settings in BQ25790.
Accoridng to my knowledge the settings in BQ25790 will go back to default if battery is completely discharged and no external power source available. We have swtiched of watch dog.
In this case, charge current is 2A ( we need maximum 1.5A, Vin limit ( we need 12V ) active and so on. A few important settings will be lost ( back to default ) when the charger powers up from a power shut down and it needs to be reconfig by the host and that is no problem when the host is active. :-)
I would like to ask if there is any way to store settings in BQ25790 ( looks like there is no internal flash ) and read them without the host active? Is there a way to use external eeporm or similar?
Thanks/ björn H
Hi Björn,
Unfortunately, no. There is no way to save the settings after power down. The registers must be rewritten each power up (either battery or VBUS). You can limit the total output current (ISYS+IBAT) by limiting the input current using the ILIM_HIZ resistor divider.
Regards,
Jeff