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BQ27Z561-R1: BQ27Z561-r1 sleep current

user44411751
Intellectual 940 points
Part Number: BQ27Z561-R1
Other Parts Discussed in Thread: EV2400

We supplied +2.8V into PCBA Vb on Debug bench, while the PCBA enter into standby mode, found the sleep current value is about 46ua, the other PCBA the sleep current is 15ua.The datasheet have not defined sleep current max limit. If the chip entry into sleep mode while the current is 46ua?

  • 0
    TI__Guru* 76230 points

    Hi 

    Some other component on your board must be drawing the additional current hence you are seeing the higher value. Are you testing using the evm and ev2400? If so disconnect the cable from the ev2400. I you re testing using your boards, are your comm lines pulll -up resistors pulled to the cell voltage? What is the value of your pull up resistors. Can you share your schematic

    thanks

    Onyx