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TPS3700: Cheaper alternative

Adrian Ymeraj
Expert 3750 points
Part Number: TPS3700
Other Parts Discussed in Thread: TLV809, TPS3840, TPS3510, TPS3710

Hello team,

I would need a voltage supervisor to verify that the input stage with 12V..250V input rail is generating an output voltage of at least 7V (generally between 7 and 10V).

I noticed that the TPS3700 is a good candidate but too expensive, TLV809 is cheap but limited in voltage range (would avoid voltage partition if possibile); do you have any alternative?

Please let me know your thoughts.

Thank you and best regards,

Adrian

  • 0
    TI__Genius 9375 points

    Hi Adrian,

    I understand you need a voltage supervisor with wide Vin for your application. One of our newer devices, the TPS3840, provides an operating voltage of between 1.5 V and 10 V. This allows monitoring of 9V rails without external components and 24V rails with external resistors. This is also more of a cost optimized solution, but it does not support 12V itself.

    Thanks,
    Abhinav.

  • 0 in reply to Abhinav.Sharma
    TI__Expert 3750 points

    Hi Abhinav,

    thanks for the recommendation but since I'm monitoring an output voltage between 7 and 10V the TPS3840 is very on the limit, ideally it would be better to have some margin.

    Do you have any other recommendation with a broader voltage? What about the TPS3510/11, do you see any issue with using them?

    Thank you and best regards,

    Adrian

  • 0 in reply to Adrian Ymeraj
    TI__Genius 9375 points

    Adrian,

    I recommend taking a look at our Voltage supervisors (reset ICs) Quick reference guide to further your search for a Wide Vin supervisor. You can see the devices that support higher Vin and the 1ku pricing is on the very right. Th TPS3710 might be more along the lines of what you are looking for, and we don't really see the TPS3510/1 being used outside of PC power supplies but it can be applied.

    Thanks,
    Abhinav.