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THVD9491-SEP: Power Dissipation at Vcc=3.3V

Kazuhiko Hirano
Genius 15008 points
Part Number: THVD9491-SEP

Tool/software:

Hello,

The datasheet 5.6 specifies Power Dissipation at Vcc = 5.5V.

My customer would like to know that at Vcc=3.3V.
Could TI provide the requested data?

Best regards,

K.Hirano

  • 0
    TI__Genius 13472 points

    Hirano-san,

    I checked our internal database and we do not have power dissipation data for 3.3V as this is a new device. Note that the power dissipation testing is done in loopback mode, and the realistic power draw will be different in the customer's system. In this case, the best power estimation will be in the customer's particular system. 

    Regards,

    Ethan

  • 0 in reply to Ethan Sempsrott
    TI__Genius 15008 points

    Ethan,

    Thank you for your responses. My customer understood your responses.x
    But, at least, they would still like to know if the power dissipation at 3.3V is lower than the one at 5V? What can TI respond on this?

    Best regards,

    K.Hirano

  • 0 in reply to Kazuhiko Hirano
    TI__Genius 13472 points

    Hi Hirano,

    Yes, 3.3V power dissipation should be lower than 5V. Another way to estimate power is if you look at the ICC supply current in Section 5.7 of the datasheet. There is no load on the bus, but it compares 3.3V to 5V VCC. At the 3.3V range, the current is lower by around 0.5mA for the typical conditions:

    Best,

    Ethan