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TLV803E: Can I change the detection voltage by using a divider resistor?

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Part Number: TLV803E

Hello experts,

Is it possible to change the detection voltage by using a divider resistor?

I want to detect in the range of 12V to 15V, but I'm concerned about the output oscillating due to the feed-through current.

Thanks and best regards,

-Udai

  • Udai,

    You can achieve higher level detection with a voltage divider circuit. While we do not outline it in the TLV803E datasheet, you can take a look at our TPS3840 datasheet in section 9.2.3 Design 3: Fast Start Undervoltage Supervisor with Level-shifted Input. This section is a good example of how to divide down on a supervisor without a SENSE pin. I would advise though that if Iq is a concern, you should use a supervisor with a SENSE pin which greatly reduces the amount of leakage current. We have an article on that here: https://www.ti.com/lit/an/slva450a/slva450a.pdf

    Thanks,
    Abhinav.


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