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TPS3760-Q1: UV detection worst case voltage

Takuma Ito
Expert 5200 points
Part Number: TPS3760-Q1

Hi, there is a example threshold voltage calculation in the datasheet like below, does this include all the variation? the VITN is min 0.792 to 0.808, so if I consider worst case, do i need to add +/- 8mV to the "839.4mV ~840.6mV" ?

What is worst case VITN+VHYS if VHSY=2% and VITN=0.8V variant is used? 

  • 0
    TI__Genius 11410 points

    Hi Ito-san,

    Thank you, for you question, yes for the worst case analysis, the hysteresis calculation should be done after including the threshold accuracy.

    Example:

    Undervoltage (UV) Channel

    Vitn = .808V

    Voltage Hysteresis (Vhys) = 2% = .02 * .8V = 1616mV

    Hysteresis Accuracy = +/- 1.5% = 16.16mV*(1.015) or 16.16mV*(.985) = 16.4024mV and 15.9176mV

    Release Voltage = Vitn + Vhys = .808V + 16.4024mV or .808V + 15.9176mV = 823.9176mV to 824.4024mV

    Jesse