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TPS65911: How big is the quiet current of TPS65911 Vbackup pin

Longchang Chen
Intellectual 1350 points
Part Number: TPS65911

How big is the quiet current of TPS65911 VBACKUP pin ?  how to understand "Backup battery charging current" in D/S,

  • 0
    TI__Genius 16410 points
    Hi Longchang,

    Section 5.9 of the datasheet shows the BACKUP current as 10uA max when VBAT=VCC=V5IN=0V, and VBACKUP=3.2V, while RTC is running. So I would use this as BACKUP current.

    The backup battery charging current spec lists the min and max current which will be used to charge the battery when charging is enabled. So the charging current could vary from 350uA to 900uA depending on device, temperature, etc.

    Regards,
    Karl