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TPS3704-Q1: TPS3704-Q1

Ozan Güney Düşmezer
Intellectual 300 points
Part Number: TPS3704-Q1
Other Parts Discussed in Thread: TPS3704, TPS3703-Q1, TPS389006-Q1

Tool/software:

When i use resistor calculator. excel folder and if we want to use %4 threshold version of the product, It cannot within +-%5 net threshold with R1 and R2 %0.1 tolerances. But 22. page of the datasheet indicates me %4 threshold product can be used for %5 toleranced MCU.

Can you give me advise adj version option for TPS3704 that can handle %5 threshold MCU?

  • 0
    TI__Genius 9700 points

    Thanks for your question.

    Can you please first let me know what is your nominal voltage that you are trying to monitor? And what Resistor values are selected from the calculator

    I want to check if the calculator is providing the correct information. 

    Thanks,

    Sila 

  • 0 in reply to Sila Atalar
    Intellectual 300 points

    As you indicate your 3.3V example, I want to monitor 3.3V in advance. User input threshold %4, R2 16kohm, R1 50.5kohm, Vsense=0.8V, Isensemultiplier=142. Resistors tolerance %0.1. Calculator gives us VmonOV max is 3.49258V. It isn't inside of 3.3V+%5 also the other limits are similar according to these values.

  • 0 in reply to Ozan Güney Düşmezer
    TI__Genius 9700 points

    Hi, 

    I run the calculator also and it seems like 0.4V (4%) would be the OPN that you looking for when we consider your requirements. Unfortunately, we don't have that OPN option. 

    Are you looking for single channel monitoring? If that's the case, Please check TPS3703-Q1;  0.7% maximum accuracy allows for adjustable voltage thresholds using external resistors without adding major inaccuracies to the device

    The variant: TPS3703B3080DSERQ1 Adjustable (3%)

    Please check this device and if you want to use this I can check the resistor values. We don't have a calculator for this one .

    Best,

    Sila 

  • 0 in reply to Sila Atalar
    Intellectual 300 points

    I want to monitor an FPGA supplies 1.2V, 2.5V and 3.3V. FPGA working voltage ranges is -+%5 limits. So i need detect these voltages in to the limits. If it is possible i want to use voltage monitoring a single 3 channel voltage monitoring ic? Can you recommend me a material that can fulfill this function?

  • 0 in reply to Ozan Güney Düşmezer
    TI__Genius 9700 points

    Hi, I will be reaching out to you learn the opportunity details to understand how we can support better. 

    But I want to highlight TPS389006-Q1, which it's a high accuracy (±6mV threshold accuracy) multichannel voltage supervisor and it's designed for systems that operate on low-voltage supply rails and have narrow margin supply tolerances.

    Best,

    Sila Atalar