LM117QML: differences with LM117H

Hello Chris,

No, the LM117H/883 uses a different die and is not being discontinued. Temperature range seems to be the only difference but I will continue to look deeper into it. 

~ Aaron

Thanks, Aaron.  Have you found any additional information?  Were the LM117H and LM117H/NOPB the National Semiconductor die while the LM117H/883 is the Texas Instruments die?

Chris

Hey Chris,

I compared specs between the two. The LM117H/883 has slightly better load regulation and more narrow operating temperature range. Other than that, I'm not seeing significant electrical differences. Die size between the two devices is also the same; that's typically an indication of similar (or same) design. 

Since these devices were released in 2004 & 2006, the documentation isn't great. I can see that there are differences in package BOM, perhaps in an effort to make it MIL grade. But, other than that, I'm not seeing much. 

Based on the evidence available, LM117H/883 looks to be an electrical equivalent from -40 to 125C. Would that temp range be wide enough for your application?

~ Aaron

Thanks, Aaron.  We can probably use the reduced temperature range.  However, it will really help if it can be verified that both devices use the same die.  Thanks.

Hey Chris,

Please give me another couple of days to look into this. 

~ Aaron

Aaron,

Were you able to verify if these two part numbers use the same die?

Thanks.

Chris

Hey Chris,

I've asked our PE team for their advice on this. Will try to get an answer ASAP.

Thanks for your patience.

~ Aaron

Hey Chris,

I heard back from the PE team. Unfortunately, they were not able to find any documentation to confirm that the design is the same between the two. 

All indications are that LM117H/883 has the same behavior up to 125C. There's also no EOL planned for this one.

Sorry I don't have more to provide here.

~ Aaron