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PCA9306: Excessive leakage current

Jeff Coletti
Expert 8755 points
Part Number: PCA9306

Hi Support team

y customer is measuring excessive leakage current. In the data sheet, figure 14 , you are suggesting adding a resistor to ground to sink 4.5uA, My customer is measuring 31uA. I can send a schematic via email once signed. 

Regards

Jeff Coletti

  • 0
    TI__Guru 73181 points
    Hey Jeff,

    The expected current from Vref2 to Vref1 is an equation of: [Vref2- (Vref1+~0.6V)]/Rpull {You can see this in figure 13 where no pull-down resistor is used}

    You should measure the voltage at the enable pin and the resistor value using a DMM to double check values.


    If you still have further questions or do not understand, you can email me at duynguyen@ti.com

    -Bobby