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DRV8840 Question about V3P3OUT

HM
Intellectual 460 points
Other Parts Discussed in Thread: DRV8840

Hi,

I have two questions about DRV8840.

1)  I don't use V3P3OUT terminal.  In this case, V3P3OUT terminal should be "open" or "Bypass to GND with a 0.47-μF " ?

 

2)  I don't use I0 ~ I4, nRESET and nSLEEP terminals.  In this case, pull-up resistor is required?  Can I connect all of them connect to 3.3V directly? (without pull-up resistor)

 

Thanks in advance.

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  • 0
    TI__Mastermind 26065 points

    Hi Hide

    1. V3P3OUT should be connected with a cap 0.47uF to GND even not used.

    2. Yes. All those logic inputs pins can be connected to 3.3V or GND directly. But note that nSLEEP can't be connected to device's V3P3OUT because nSLEEP will shutdown internal LDO so the device never wake up again.

    Thanks.