BQ24770: BQ24770: How to connect BATPRES PIN for 2cell application?

Mark Chen52

Part Number: BQ24770

Hi All,

Does any know how to connect BATPRES PIN for the 2-cell application Li-on battery?

This PIN active low battery present input signal, we should be judgment disable charge level from this pin. so anyone have recommend for this?

over 8 years ago

0 Jing Zou over 8 years ago

TI__Mastermind 20300 points

/BATPRES pin should be connected to the battery pack BATPRES output.

0 Mark Chen52 over 8 years ago in reply to Jing Zou

TI__Expert 7245 points

thanks for your feedback Jing, how to connect if battery didn't have BATPRES Pin?

0 Jing Zou over 8 years ago in reply to Mark Chen52

TI__Mastermind 20300 points

Depends on your application, you can pull it low so that this function is not used by assuming the battery is present all time. Or you can use the independent comparator to detect if the battery is present and connect /BATPRES pin to the CMPOUT pin. Note that when enabling the independent comparator, the power consumption of the IC is higher.

Power management

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BQ24770: BQ24770: How to connect BATPRES PIN for 2cell application?