BQ24133 - About unused output pins

Dice-K

Hello,

When I do not use CMSRC, ACDRV and BATDRV pins, is it correct that these pins are open?

Regards,

Daisuke

0 Charles Mauney over 12 years ago

It is fine to leave them floating. since they only toggle in and out of sleep mode, it not like they are going to couple noise into anything.

0 Dice-K over 11 years ago in reply to Charles Mauney

Hello Charles,

Thank you for your reply.

I do not use ACFET and reverse-blocking-MOSFET(RBFET) because there is no circuit from adapter to system.

In this case, is the reverse-current protection necessary (for example diode)?

Is there a following path?

Battery > SW Pin > PVCC Pin > AC Adapter

I want to know whether that reverse-current from battery to adapter occur.

Best regards,

Daisuke

0 Charles Mauney over 11 years ago in reply to Dice-K

There should not be a low impedance path from battery to PVCC.

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