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BQ32002: Vback pin if RTC backup is not used

Part Number: BQ32002

Hello team,

We are using the RTC in a application where there is No need to remain clock while the device is powered off and it will be time synchronized by the system master clock when device start again. So can I keep the Vback pin as NC ?

Thanks and Regards,

Arun M

  • Hi Arun,

    I recommend connecting Vback to VCC, rather than floating. I am unsure if Vback is pulled up internally to VCC, or if Vback must be connected during operation. It seems there is no reason not to connect Vback to VCC just to be sure. Please make sure that the trickle charge switches are not opened for this configuration.

    Regards,

    Derek Payne