i am using an LMC6772A and I need to make sure that the output does not go out-of-control during startup and go LOW for any length of time, i.e. while the supply voltage is less than 2.7V, the output needs to stay high (open drain). the inputs will always be + > - during startup.
is there some way to figure out if this comparator is intrinsically designed to be open-drain during startup?
Spec/Data Sheet?
If you have a very good SPICE file from the manufacturer you might be able to figure it out. However, if something can seriously break in case it doesn't comply I would do this with discretes. If your BOM budget allows (mine usually doesn't...) you could even use a fancy reset chip for uC, a pnp, some resistors etc.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required