Brown-in — meaning?

[cmyguo3o]

Hello,

In a specification for a hypothetical LED driver, I've encountered the following line:

"Input voltage for brown-in - Vin(start) - 72 Vrms"

This is a line-input driver, with 85...265 Vrms input range. What does "brown-in" mean here?

Thanks in advance!

 

[dougy83]

It's the brown-out recovery voltage. Brown-out is the voltage at which the under-voltage-lockout will take effect and brown-in is the voltage that the under-voltage-lockout will cease to be in effect.

e.g. brown-out voltage may be 60V and brown-in might be 72V; if the voltage drops below 60V the device will stop operating and won't start operating again until the input voltage exceeds 72V.

 

[cmyguo3o]

Thank you dougy83! For some reason, Google search results for this term, even with quotes, aren't terribly useful.

 

[dougy83]

You're welcome. I googled

"brown in" voltage

and received links to a few datasheets using the term. That and I already knew what "brown out" refers to. Brown-in is a stupid term anyway.