LM237 instead LM337

[spoontex]

Hi,

Can I use an LM237 instead a LM337? I look at the datasheet but I can't see the differences.

[antonis]

Yes, you can use it..

Main difference is operating virtual junction temperature (LM237 exhibits wider margins) and minors are R_θJA & R_θJC as well as better output regulation for LM237..

[amptramp]

The numbering system goes like this:

LM137 = military temperature range = -55°C to +150°C
LM237 = industrial temperature range = -25°C to +150°C
LM337 = commercial temperature range = 0°C to +125°C

The LM137 and LM237 have identical better specs for line and load regulation and accuracy of the reference voltage and a lower minimum load current.  What you have is an improved spec version of the LM337.

[spoontex]

Thanks for the feedback.