REF3133 Issues

chenbingjy

REF3133 Issues [Copy link]

I want to ask an expert, I plan to use REF3133 as a reference source to provide 3.3V.

The maximum input is 7V. For this kind of reference source, does the input have to be a certain voltage higher than the output?

Is it okay to use 3.3V input? Or is it okay to use 5V?

I'm a newbie. Please give me some advice, thank you!

littleshrimp

vin-vout 5-50mv

littleshrimp

Look at the Dropout voltage line

chenbingjy

littleshrimp posted on 2019-8-6 18:20 Look at the line about Dropout voltage

Thanks! I see. It seems that if you want to use 5V, the input voltage value will not work if it is lower than 3.3.