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BQ76930: Drive capability of DSG and CHG

Shane Buckham
Prodigy 70 points
Part Number: BQ76930

Hi,

Can you please advise what the drive capability of the DSG and CHG outputs are?

The datasheet specifies testing at 10Meg but the TI reference designs use 1Meg. We want to use ~60K if possible on the MOSFETs if possible.

Thanks,

Shane

  • 0
    TI__Guru 54715 points

    Hi Shane,

    The CHG and DSG outputs are specified with rise time, the authors expect we can calculate the resistance, but it is 5k nominal.  The outputs can be shorted low.  If the outputs are in regulation at 12 V and have the nominal 5k current will be limited to about 2.4 mA when held low.  Current comes from the REGSRC input. 

    60k is within the capability of the outputs.