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LMR14020-Q1: External EN input voltage compatibility vs VIN of LMR14020-Q1

Philip Pun
Prodigy 30 points
Part Number: LMR14020-Q1

Can the EN pin be driven by an external 5V PGOOD to enable the LMR14020-Q1 3.3v to 1.8v dc/dc step down conversion w/o damaging the internal current source of the device?

  • +1
    TI__Guru 71445 points

    Hi Philip,

    Thank you for consider our product.  Yes you can drive EN by an external signal like 5V.  Note that the EN threshold is 1.2V. The internal current source would not be damaged by such use.

    Hope this clarifies.

    Youhao