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TPS54228: regarding Vreg UVLO and hysteresis

Masaharu Takahashi
Expert 4170 points
Part Number: TPS54228

Hi, Team.

could i confirm my understanding correct what i've been asked by Customer?

  • 0
    TI__Expert 8245 points
    Hi,

    You can understand them with the word "guarantee". That means we guarantee under 3.45V VREG, the device will be shut down for sure, and the voltage will be definitely no more than 4.05V. The range is based on tests of plenty devices and we cannot guarantee a certain voltage of a certain device. The same as the hysteresis VREG5 voltage, thanks.
  • 0 in reply to Iven Su
    TI__Expert 4170 points
    Hi, Iven-san

    thanks your comment here.

    let me confirm one thing.

    for hysteresis,
    if device turns into UVLO and it will be in UVLO even if the voltage changes (0.13V ~ 0.48V). correct ?
  • 0 in reply to Masaharu Takahashi
    TI__Expert 8245 points
    Hi,

    Actually, not correct. "If device turns into UVLO and it will be in UVLO even if the voltage changes", it's correct. But the range might be (-0.13V to 0.13V), or might be (-0.48V to 0.48V), we keep RANGE of the range between the two values. Thanks.