BQ25720: charger's power source pin

Fred Cheng

Expert 5740 points

Part Number: BQ25720

Hi team,

I notice Vbus is the pin for supply charger's current,

but how about when battery-only condition (VBUS=0V),

which pin does charger use to sink current to function instead?

regards,

Fred

over 2 years ago

0 Jacob Rook over 2 years ago

TI__Intellectual 1805 points

Hi Fred,

I'm not sure that I understand you question. Could you clarify your question? Vbus is for the adaptor that supplies current for VSYS and VBAT. In battery only mode, the battery supplies the power to VSYS.

Regards,

Jacob

0 Fred Cheng over 2 years ago in reply to Jacob Rook

TI__Expert 5740 points

Hi Jacob

Just want to know which pin is the supply pin for IC itself,

so you mean Vbus pin is the supply pin when adapter is plugged,

While it would change to Vsys pin when battery only mode, right?

please help confirm.

+1 Jacob Rook over 2 years ago in reply to Fred Cheng

TI__Intellectual 1805 points

Hi Fred,

Yes this is correct.

Regards,

Jacob

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BQ25720: charger's power source pin