PT4115 cannot be completely shut down

space2010000

PT4115 cannot be completely shut down [Copy link]

Is there anyone who can completely shut down PT4115? I built the circuit according to the reference material, and the DIM voltage is less than 0.3V, but the current is still more than 500uA. The data shows that it is 60uA.

tagetage

What is your working voltage? Is it 12V? Is the 100UF capacitor in front leaking? Check it. It should not be more than 500uA after being turned off.

space2010000

tagetage posted on 2022-1-21 12:29 What is your working voltage? Is it 12V? Is the 100UF capacitor in front leaking? Check it out. It should not be more than 500uA after it is turned off.

Yes, it is 12V. Lowering the voltage is useless. The capacitor leakage should not have such a large current. I removed the capacitor and tried it, and the current was basically not reduced.

tagetage

Another possibility is that you bought a compatible product from another manufacturer. There are several compatible products for PT4115. Are you sure you bought the genuine product? ? ? ?

tagetage

I'm looking at a product from POWTECH, and the shutdown current is 95uA. Which data sheet did you look at? ? ? ?

qwqwqw2088

Measure the voltage when the DIM pin is suspended, about 5V is normal

machinnneee

DM is directly grounded to see how much leakage there is.

tagetage

OP, are there any test results? ??? ??? ??? ??? ??? ??? ???

se7ens

It's normal.

The manufacturer only stated the typical value, not the maximum value.

500uA may be normal