ULN2003A: ULN2003 motor driver chip output instant pull down problem

user5345709

Part Number: ULN2003A

ULN2003 motor driver chip measurement drive input waveform is normal, the output waveform appears a moment to pull down and restore the problem, what is the cause?

over 5 years ago

0 Alpha H over 5 years ago

TI__Genius 10855 points

Hi User,

Thanks for reaching out on E2E!

Can you share any schematics of the configuration? What is the difference between the configuration on the left and the right? Does replacing the device fix the issue?

Thanks,

Arthur Huang

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0 Alpha H over 5 years ago in reply to Alpha H

TI__Genius 10855 points

Hi User,

I wanted to follow up on this thread, have you been able to fix the issue?

Thanks,
Arthur

0 user5345709 over 5 years ago in reply to Alpha H

Intellectual 305 points

Here's the schematic. Thank you.

0 Alpha H over 5 years ago in reply to user5345709

TI__Genius 10855 points

Hi User,

I'd like to get a better understanding of the application.

Does replacing the device fix the issue? When do you notice the differences in waveform? Operating conditions? Any other additional details you can provide would be appreciated.

Thanks,
Arthur

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ULN2003A: ULN2003 motor driver chip output instant pull down problem