• LTM4668A


    I have a simple question.

    Is it possible to use for 3pcs VIN pins input voltage 3.3V and for last VIN pin 12V, please? I would like optimise efficienty (3 output voltages will be lower than 2.0 V and one I need 3.6V. 

    Many thanks in advance.


  • RE: About θjc of LTM4668A


    datasheet of LTM4668A has been changed to reflect the correct theta values on page 2:

  • LTM4668A INTVcc

    According to the data sheet, Internal Vcc (INTVcc) is at 5V when Vin is greater than 6V. I want to use INTVcc to source 6mA for and LED power good circuit that is controlled by any the open drain PGOODX outputs of the device. Is this possible?

    The data…

  • INTVcc voltage for LTM4668A

    Hi all,

    I have a question about INTVcc for LTM4668A.

    What will the output be at IntVcc when the Vin is less than 5 V .

    I have this question because this device can be using from 2.7V onward which way below 5V (Input to the internal LDO ).

    INTVcc is defined…

  • LTM4668A PGOOD input current

    Good evening,

    I have got a question about the PGOOD open drain inputs of the LTM4668A.
    It says that those pins are pulled to GND when the output voltage leaves the aimed voltage window.
    In this case there is a resistance of R_pgood 275 Ohm left(?).

    I would…

  • LTM4668A About thermal shutdown


    I have a question.

    Please give me an answer.

    I want to use LTM4668A.

    I'm checking the data sheet,
    Please tell me about thermal shutdown.

    Is the thermal shutdown of the LTM4668A correct at 150 ° C?
    Also, I think that thermal shutdown will self…

  • LTM4668A Current limit

    I will use LTM4688A

    Let me ask a question about the overcurrent protection function

     Does it mean that each pulse has a limit of 2A?

    In that case, if the limit is detected, does the lower FET turn on?

    And will the upper FET turn on again at the next PWM…

  • LTM4668A RUN Input Current


    Is there any spec available for the input current on the RUN pin for the LTM4668A?


    This would be useful for knowing which value resistors to choose for biasing this pin.


  • LTM4668A output current at burst mode


    LTM4668A datasheet rev.A P.11 says below.

    "During Burst Mode operation, the peak current of the inductor is set to approximately 400mA in normal operation
    even though the output of the error amplifier (COMP) indicates a lower value."

  • LTM4668A datasheet vs LTPowerCAD

    I've tried to recreate design from 1st page of LTM4668A datasheet in LTPowerCAD and it looks strange.

    1) Datasheet Vin range 5-17 V with output as low as 1.5 V - in LTPowerCAD it's visible that Ton@Vin max is way too low and out of range, and it will…