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TPS54525,TPS54429 / EN threshold

Tsukui Yusuke
Guru 21930 points
Other Parts Discussed in Thread: TPS54429, TPS54525

Hi Team,

I’d Iike to ask about TPS54525 and TPS54429.
Our customer is going to use TPS54525 or TPS54429.
Customer will be selectively used according to the current value.
But TPS54525 and TPS54429 threshold of EN is different.

Whether these two IC differ in structure?
Please tell me why the threshold is different.

Best Regards,
Yusuke　/ Japan Disty

  • 0
    TI__Guru**** 191445 points
    The EN values in the datasheet are specified like logic gate. The actual thresholds, are in between about 0.7 and 1.1V with about 100 mV of hysteresis. Usually the EN inputs are pulled high or driven by logic. If you are above the stated high level threshold, you are guaranteed to be enabled and if you are below the low level threshold you are guaranteed to be disabled. I do believe the actual EN threshold are different for those two devices with the TPS545265 having a lower value, while the TPS54429 has the upper value.
  • 0 in reply to JohnTucker
    Guru 21930 points
    Hi John,Thank you for the reply.I understood the information.Best Regards,
    Yusuke　/ Japan Disty