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LM3550: Is LM3550 IC works without balance pin

Madhan Kumar
Prodigy 20 points
Part Number: LM3550

I have used the ELDC supercapacitor - KR-5R5H474-R, it does not have balance pin, Is this correct ?

In my board, Vout is 0V, it is not charging the supercapacitor. is there any alternate for this

attached the schematic below.

  • 0
    TI__Genius 15445 points

    Hi Madhan

    Our expert is out of office and will reply to you later.

    BR, Jared

  • 0 in reply to Jared Zhou
    TI__Expert 6440 points

    Hi Madhan，

    Sorry for the late reply，please try to configure the capacitor charge level after powering up to see if there is voltage on VOUT.

    Besides，we still suggest to use the super capacitor with balance pin，because the BAL function cannot be disabled by register setting，and I think this will affect your application.

    For the alternate，if totally 3A flash current is acceptable，LM3644TT is our newest flash device，you can check if it can meet your requirement.

    Thanks！

    BRs，

    Ives Li