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LDO Load Test Output Current is coming more than output current Capacity

Hari T O0
Genius 3820 points
Other Parts Discussed in Thread: TLV1117LV

Hi,

I am performing the load test for an LDO(5-1.5V) output current capacity of 1A.

When I set the ELOAD current to 1.5A I can see that both input and output voltage are dipping,but I am getting an output current of 1.3A.

May I know is it possible or not.

May I know is there any parameter called "Over load current" exists for LDO.

Please find the attached image. CH2-Output Current,CH3-I/P voltage,CH-4 O/P Current.

Regards

Hari

  • 0
    TI__Genius 17380 points
    Hi Hari,

    What is the part number that you are testing?
  • 0 in reply to Kevin LaRosa
    Genius 3820 points
    Hi Kevin,
    It is not a TI part. Could you please tell me why it is showing like that.Some of your General views.And also is there any parameter called overload
    current rating for an LDO.
    Regards
    Hari
  • 0 in reply to Hari T O0
    TI__Genius 17380 points

    Hi Hari,

    Unfortunately, I can't comment on what features a competitor's part may or may not have or if it is working properly.

    For information regarding Texas Instruments LDOs, there are several resources.

    First, an example of a TI LDO which supports 5V -> 1.5V conversion up to 1A is the TLV1117LV. It has a current limit of 1.1 A which is described in our datasheet.

    The LDO Quick Reference Guide also includes some definitions of features available on TI's LDOs:

     

    Or the LDO solution guide: 

     

    If you decide to use one of TI's LDOs, feel free to ask additional questions. I would recommend starting a new thread so that the post goes to the LDO forum.