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TLV707: What's the maximum dropout voltage at 1.8V output

Shaquille Chen
Intellectual 1770 points
Part Number: TLV707

Dear Team,

What's the maximum dropout voltage at 1.8V output ?

Refer to electrical table shown in datasheet page 6, my customer want to know the range of dropout at 1.8V.

Thanks 

Shaq

  • 0
    Guru 140200 points
    Hi Shaquille,

    please remember that a minimum input voltage of 1.8V + 0.5V = 2.3V is necessary to make the regulator work properly!

    Kai
  • 0 in reply to kai klaas69
    TI__Mastermind 23361 points

    Hi Shaquille,

    Unfortunately we don't have a EC table maximum dropout spec for the 1.8V output version. However, you can use the characterization curves to get the typical values for the dropout values at different Vins.

    Regards, 
    Jason

  • 0 in reply to kai klaas69
    TI__Guru 55940 points
    Hi Shaq,

    What load current are you using in your application? Please note that the Electrical Characteristic table specifications are tested at 150 mA. Since dropout is linear with respect to load current, dropout will be higher with higher load currents.

    Although it is not clearly stated in the Electrical Characteristics table, we do not test dropout on voltages lower than 2 V. The reason for this is that in order to force dropout for the measurement we set Vin to 98% of the nominal Vout. Since Vin minimum is 2 V, we are not able to test dropout on the lower output voltages at final test.

    Hi ,

    I believe you are pointing to the general test conditions at the top of the Electrical Characteristics table. TLV707 can be functional with lower than 0.5 V headroom depending on the application conditions. The general test conditions were selected with 0.5 V headroom in order to ensure that each device is in a known state before we exercise a specific parameter. For example, it ensures that the LDO is not in dropout when DC accuracy is measured.

    Very Respectfully,
    Ryan