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TCAN1042-Q1: About temperature characteristics of UVvcc

Part Number: TCAN1042-Q1

Hello Team,

I want to know the temperature characteristic of UVvcc(Falling undervoltage).
When Ta is high, the threshold becomes high? or low?
When Ta is low, the threshold becomes high? or low?
I would like to know the temperature condition that may be 4.25V(max).

> 7.6 Electrical Characteristics
>  UVvcc(Falling undervoltage) 3.8~4.25V(-55℃~125℃)

If the threshold is high when Ta is high, please tell me if there is information on Typical value at 85℃/105℃.
Please give me an approximate value instead of a guaranteed value.

Best regards,
Kato

  • Kato-san,

    After looking at some characterization data over 4 different lots and across corner temperatures (-55C, 25C, 125C), I can conclude that there doesn't seem to be any correlation between temperature and the UVvcc threshold; there is a slight dependency on the threshold whether you are rising out of the undervoltage condition versus falling into it though.

    The temperature condition for which the threshold is 4.25V happens at any temperature, but only when rising out of the undervoltage condition, that is, going from undervoltage condition and raising the voltage high enough to be out of the condition.

    Across all temperatures, the average minimum threshold is just above 4.05V, and the maximum threshold is just above 4.15V.

    Please let me know if you have any other questions or concerns.

    Regards,
  • Hello Eric-san,

    I understood that UVvcc has not temperature characteristic.

    I know that the threshold changes with Rising and Falling.
    >Across all temperatures, the average minimum threshold is just above 4.05V, and the maximum threshold is just above 4.15V.
    Does the above mean the average of Rising and Falling? I want to know the average of Falling.
    What is the average range of Falling? Please give me an approximate value instead of a guaranteed value.

    Best regards,
    Kato

  • Kato-san,

    The values I gave you were an average across the -55C to 125C temperature range, rising and falling combined.

    The average of falling is Minimum 4V, maximum 4.1V. Please let me know if you have any confusions or any more questions.

    Regards,