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LM61495T-Q1: The real benefit and test data between LM61495-Q1 and LM61495T-Q1

Ted Xu
Expert 4745 points
Part Number: LM61495T-Q1
Other Parts Discussed in Thread: LM61495-Q1

Hi team

Would you provid the real benefits betwwen LM61495T-Q1 vs LM61495-Q1?

Comparising datasheets, both share the same thermal parameters and efficiency.  Can not get the real benefits fromt the dual cooling. 

Thanks 

  • 0
    TI__Genius 11480 points

    HI Ted,

    thanks for your question. I will look into it and get back to you

    Thanks and regards

    Naresh

  • 0 in reply to Naresh Adepu
    TI__Genius 11480 points

    Hi Ted, 

    The real benefit of LM61495T-Q1 compared to LM61495-Q1 lies in the package design and resulting thermal performance. Both share similar electrical specs and efficiency according to datasheets, but LM61495T-Q1 features a thermally enhanced package that enables dual-side cooling. This package exposes the die on the top side, allowing heat to escape more effectively, either directly to air or to an external heat sink, significantly improving its thermal characteristics compared to the standard QFN

    This package allows more effective heat dissipation from the top, resulting in a much lower top-side thermal resistance and enables higher continuous output current (up to 10% more) at elevated ambient temperatures. In high temperature or high current applications, LM61495T-Q1 can operate up to 34°C higher before thermal shutdown if used with a heat sink. Electrically, specs remain similar, but the dual cooling design gives a real-world thermal advantage.

    Thanks and Regards

    Naresh

  • 0 in reply to Naresh Adepu
    TI__Expert 4745 points

    Hi Naresh

    Thanks for your explanation on the enhanced thermal package. 

  • 0 in reply to Ted Xu
    TI__Genius 11480 points

    Thanks Ted, I am closing the thread. 

    Thanks and regards

    Naresh