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LM5155: What is different between LM5155 and LM51551?

Motoyasu Hattori
Genius 11125 points
Part Number: LM5155

Hi,

What is different between LM5155 and LM51551?   Hiccup mode is only different, and both devices are pin-compatible.  Is it correct?  I want to confirm it.

Thanks and best regards,
M.HATTORI.

  • 0
    TI__Guru* 78440 points

    Hi Motoyasu-san,

    Yes, you are right that the LM5155 does not have the over current hiccup mode protection, but the LM51551 has it.  Please refer to the datasheet Section 9.3.10.   Other than that the two devices are basically the same and pin-to-pin compatible.

    Thanks,

    Youhao Xi, Applications Engineering