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TPS54140A: Thermal resistance for four-layers board

Part Number: TPS54140A
Other Parts Discussed in Thread: LMR33620,

Hi,

My customer requests the thermal resistance on the four-layers board condition.

Does anyone have it?

Best Regards,

Kuramochi

  • Hi

    we don't have data for TPS54140A, from LMR33620 PCB areas VS theta JA,  it will be similar with SOIC8 compare to MSOP8 package, . You can estimated it around 30deg C/W if you have same copper as SOIC8.

    You can find LMR33620 Theta JA VS PCB at its datasheet page 24.

    Thanks