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TLV8541: solution select

Denny Huang
Expert 7170 points
Part Number: TLV8541


Dear team

The customer would like to use OP AMP TLV8541DBVR as a UVP protection circuit, When Vs=3.6V、V-=5V、V+=6.3V

According customer's circuit. The trigger lever is 19V. Dose the schematic is ok? 
Or have other suggested solution?

Many thanks

Denny

  • 0
    Guru 140200 points

    Hi Denny,

    both input voltages go beyond the supply voltage of OPAmp and by this violate the absolute maximum ratings. I would add / modify the voltage dividers to keep the input voltages below the supply voltage.

    Then, I would add a hysteresis by connecting a high ohmic resistance from the output of comparator to the +input.

    Also, the TLV8541 is a OPAmp, no comparator. Why didn't you use a comparator chip?

    Kai