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LMZ14203H: Minimum Vin to Vout

Eddie Koh
Genius 10545 points
Part Number: LMZ14203H

Use case is 24V Vout at 3A.

What is the minimum Vin required? For example, would it work at 26V Vin?

  • 0
    TI__Guru 50120 points

    Hi Eddie,

    Usually there is a dropout voltage graph in the datasheet to help illustrate this. However since the LMZ14203H datasheet doesn't have this, I went ahead and took an EVM into the lab to test for dropout voltage. For 24V output at 3A loading, I noticed the output voltage dropped around 26.5V input. To air on the safe side, for 24V output at 3A loading, I would recommend the customer stay at 27V minimum.

    Regards,

    Jimmy