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LM62440-Q1: LM62440APPQRJRRQ1

Tirthal Patel
Intellectual 370 points

Part Number: LM62440-Q1

Tool/software:

Hello Team,

In our design we are using LM62440APPQRJRRQ1 ,Query is mentioned below :

1.Input to our system are from Vin Min 5V (USB) to VBATT - 36V ,would we be able to get the desired output of 5V and 4A ?

Regards,

Tirthal Patel

  • 0
    TI__Genius 9430 points

    Hi,

    Your input voltage needs to be higher than your output voltage.

    Regards,

    Rahil

  • 0 in reply to Rahil Ajani
    Prodigy 200 points

    Related question; How much higher does input need to be than output? (Couldn't find in datasheet.)

    In my application, input will vary between 10-28V. Desired output will always be equal or lower than input. Plan to variably control FB to obtain a desired output from 4V to 24V. In situations where desired output is, let's say 20V when input is also 20V, can I hold FB below 0.8V and expect output to be roughly the same as input voltage? Will the high-side FET be continuously on, aside from some small dead time?

    I plan to Spice model and bench test prior to implementing, in any case.

    Thanks,

    Howard

  • 0 in reply to Howard Ogle
    TI__Genius 9430 points

    Max duty cycle is the max ratio of vout/vin

    Based on datasheet, Vin(min) = Vout/0.87

    Regards,

    Rahil