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TPS54225: TPS54225 and TPS54226 about Enable pin pull-down resistor

Tsukui Yusuke
Guru 21930 points
Part Number: TPS54225
Other Parts Discussed in Thread: TPS54226

Hi,

Could you tell me about TPS54225/TPS54226 EN pin pull-down resistor value?
Customer wants pull-down resistor value information for circuit design.
Also,Should the EN pin be pulled down externally resistor?

Best Regards,
Yusuke/Japan Disty

  • 0
    TI__Expert 4875 points
    Hi Yusuke-san,

    I could not find any record on the pull down resistor for TPS54225/6. I measured it in the lab.

    TPS54225: EN pull-down resistor: 369.12kohm
    TPS54226: EN pull-down resistor: 392.76kohm

    In this case, no external pull down resistor needed to ensure EN is low before power on. Thanks!

    Best,
    Anthony