BQ25710: CELL_BATPRESZ questions

Ecan Hsiao

Part Number: BQ25710

Hi Paul,

Thank you for your reply

Refer to Q5, may I know which pin is for battery absent detection?

I would also like to know is there any other way to pull low the CELL_BATPRESZ except battery removal? Is there any register command for the pin?

over 6 years ago

0 Joel Hernandez II over 6 years ago

TI__Mastermind 25800 points

Hey Yi Hsuan,

The /CELL_BATPRESZ pin can be used to detect the absence of the battery.

However, there is no register internally to pull this pin low. What is your reason for pulling the pin low?

Regards,
Joel H

0 Ecan Hsiao over 6 years ago in reply to Joel Hernandez II

TI__Prodigy 60 points

Hi Joel,

Thank you for your reply

The reason for pulling low is because customer would like to confirm below description

0 Joel Hernandez II over 6 years ago in reply to Ecan Hsiao

TI__Mastermind 25800 points

Hey Yi Hsuan,

Another way to pull-down CELL_BATPRESZ is by using your own control FETs that pulls the pin low through some external signal.

Keep in mind that /CELL_BATPRESZ going LOW is an externally driven event to indicate that there is a battery removal event. However, the pin will not automatically detect the presence of a battery. You will need to implement some logic circuitry to achieve this.

Regards,
Joel H

0 Ecan Hsiao over 6 years ago in reply to Joel Hernandez II

TI__Prodigy 60 points

Hi Joel,

Thanks a lot for your support.

Power management

Power management forum

BQ25710: CELL_BATPRESZ questions