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LP8869-Q1: Startup waveform confirmation and test parameter confirmation.

Alan Xia
Genius 9750 points
Part Number: LP8869-Q1


Tool/software:

Hi team，

Please help confirm the following questions about the LP8869C test, thank you!
1. The startup waveform is defined as 65+50ms, but it is slightly exceeded after measurement. I don't see the tolerance range in the manual. Is the exceeding part within the reasonable tolerance range (what is the tolerance range?) or is there another definition?

2.2. The output is currently defined as 120mA, and when PWM dimming is F=15k duty 50%, there will be an overshoot on the rising edge, which will exceed the maximum value of 120mA.

  • 0
    TI__Genius 15626 points

    Hi Alan,

    1. COuld you pls also take VIN in the same figure? I think this should be OK. I can check a little more.

    2. The overshoot on the Iout is normal for the current sink. If the thermal is no problem, that's totally OK.

    BR, Gracie