BQ24780S: BATPRES funtion

Big Bill

Expert 1980 points

Part Number: BQ24780S

Dear

I use the bq24780s to design charger system, can you help me to confirm the BATPRES pin can be floating? Thanks

over 8 years ago

0 Wang5577 over 8 years ago

TI__Guru 56650 points

If don't use BATPRES, please connect it to ground.

0 Big Bill over 8 years ago in reply to Wang5577

Expert 1980 points

Dear Wang5577:

I see the datasheet it says "Low indicates battery present" if i connect the BATPRES to ground, whether it means the battery is present?
can you confirm the BATPRES pin can't floating?

0 Big Bill over 8 years ago in reply to Wang5577

Expert 1980 points

Dear :

Can you confirm this issue？thansk

0 Wang5577 over 8 years ago in reply to Big Bill

TI__Guru 56650 points

Please connect /BATPRES to ground if not use it. "Low indicates battery present" /BATPRES low doesn't affect the system operation.
Please don't float it because from low to high rising edge could reset the learn bit and charge current register; quit from turbo mode.

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BQ24780S: BATPRES funtion