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LP87561-Q1: Thermal Derating

George Huang
Intellectual 270 points

Part Number: LP87561-Q1
Other Parts Discussed in Thread: PEET-GUI

Hello,

Can you please advise how I can get thermal derating data for this part? Seems there is no datasheet or Webench information availible.

Regards,

George

  • 0
    TI__Genius 17797 points

    Hi George, 

    Thermal information is given in the datasheet here:

    Thermals for LP8756x-Q1 can also be calculated with the PEET-GUI (PMIC Efficiency Estimator Tool) . 

    Best Regards, 
    Sarah

  • 0
    Intellectual 270 points

    Hi Sarah,

    Thank you for your information. How ever, it seems none of two tables or PEET-GUI indicating the LP8756x-Q1 thermal degrading info, which should be similar to curves reflecting the output current degrading vs temperature increasing. Could you please check this?

    Thanks,

    George

  • 0 in reply to George Huang
    TI__Genius 16295 points

    Hi George,

    Sarah is currently out of office on international business travel, please expect a delay in her response. Thank you for your patience!

    Regards,

    Brandon

  • 0 in reply to George Huang
    TI__Genius 17797 points

    Hi George, 

    Thank you for your patience. Apologies that I misunderstood your initial request. 

    We do not provide specific thermal degrading information for this device. 

    Maximum current or each rail is consistent across the qualified temperature range, -40C to 125C.
    Absolute maximum for each individual rail is 4 A, and may be less depending on the current limit settings.
    Please refer to the respective Technical Reference Manual (TRM) of your specific OPN for current limit restrictions.

    Best Regards, 
    Sarah