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TPD1S414: Serial resistor value

Roy Chou1
Genius 16780 points
Part Number: TPD1S414


Tool/software:

Hi Team,

May you help comment on the serial resistance for us? Rough number is fine.

Roy

  • 0
    TI__Expert 8031 points

    Hi Roy,

    There's no information about these resistance.

    Please check Table 3 for EN logic high and low definitions and check section 6.9 Supply Current Consumption if you want to estimate the power lose/ leakage current during sleep mode.

    BR,

    Ke Wang

  • 0 in reply to Ke Wang
    TI__Genius 16780 points

    Hi Ke,

    We prefer the resistor value at the mega ohm range, so that it will have much less impact on other shunt components.

    Our application is shown in the block diagram below. The OVP is what we are looking for, and there will a adjustable resistor shunt in paraller with the OVP.

    There are two functions on the VDD, and they will not operate simultanously. Function 1 needs to limit VDD lower than around 6V, and Function 2 drives a small current go throught the adjustable resistor(kohm). The reason we care about the OVP input resistor is that it can affect the working range of adjustable resistor.

    Regards,

    Roy

  • 0 in reply to Roy Chou1
    TI__Expert 8031 points

    Hi Roy,

    Thanks for the detailed explanation. Unfortunately I don't think there's accurate value in the datasheet for these resistors.

    I don't fully followed the description on the functions but generally the resistance should be pretty large and have minor impact on the adjustable resistor.

    Best regards,

    Ke Wang