Maximum Current Pulse

Using Arduino Project Guidance
1

I have just purchased an ARDUINO UNO. I have done just a little bit of programing such as flashing an LED, etc.

I now want to start writing my first sketch for an application. In the application I would like to send a pulse of current out from one of the pins at 5 volts for a duration of 30 milliseconds every 2 seconds, (2000 milliseconds). This is a duty cycle of only 1.5% ON TIME. I have read on this site that the maximum out current should not exceed 40 milliamps on any single pin.

My question is; for such a short pulse of current, is it possible to increase the amperage above 40 milliamps? Or will I burn up the UNO if I go higher?

I have tried to search for the answer but have not found any guidance. for short pulses.

Thanks very much,
Beginner DaveCar

2

DaveCar:
My question is; for such a short pulse of current, is it possible to increase the amperage above 40 milliamps?

For a few pennies you can purchase a transistor that makes your question and the answer irrelevant.

3

Bondwires fuse in a very short amount of time.

4

You will damage the IO pin if you exceed 40mA. Maybe not immediately.
The output voltage is only guaranteed to 4.2V at 20mA. Voltage will degrade as current increases above that.

5

Thank you very much.
I will look at the transistor approach. I should have thought about that. I guess I was too focused on the time element. I will design with a target of 20 mA out for the 30 milliseconds.
Thanks again,
DaveCar