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ISO1450: give us the estimated Pd with specific condition

Masaharu Takahashi
Expert 4170 points
Part Number: ISO1450

hi, team

please tell us how much Pd is with below specific condition.

Vcc1=3.3  Vcc２＝5v,　Tj=125℃　frequency = 50Mhz for ISO1450

  • 0
    TI__Intellectual 2325 points

    Hi TakahashI-san,

    The team is out this week due to the Thanksgiving holiday , please expect a follow-up from us early next week , by Tuesday. From a supply and temperature perspective, the guidance you highlighted in the data sheet already covers the worst case, and we can interpolate it linearly for frequency. But anyway, we’ll try to give a better guidance next week.  thanks for your patience.

    Best regards, Abhi

  • 0 in reply to Abhi Aarey
    TI__Expert 4170 points

    thanks.

    i'll wait for it

  • 0 in reply to Masaharu Takahashi
    TI__Expert 6955 points

    TakahashI-san,

    The "Supply Current Characteristics" sections of the datasheet have some good data for the situation you have asked about.

    Generally, the max current rating will be the current drawn at max temperature. Calculating the dissipated power (Pd) for sides yield the results below.

    Pd1 = 0.0078A x 3.3V  = 0.0257W

    Pd2 = 0.162A x 5V = 0.81W

    Pd(total) = Pd1 + Pd2 = 0.836W or 836mW

    Respectfully,

    Lucas