LM60: about LM60 behavior at 130degree

hi Josh,

tks! so do you mean this chip will still function normally till 130degree? (all the math / precision spec) still works at 130degree?  then what will be the up-limitation of temp for the output voltage stop increase with temp? tks a lot!

hi Josh,

yes, understand that. so double check with you, below is what we can guarantee:at 130degree, the output voltage will be higher than 125degree. right? 

Vera -

Checking internally here with other apps team members to see what has been done above the spec range. Theoretically, you already have the answer. Have you or the customer tried this yourself?

Hi Josh,

thanks for the effort! customer should tried 1pcs chip and find the voltage can go up, but for big volume, if they want to use the function, will still need us provide the guidance. their requirement is if only the output voltage could be increased at 130degree comparing to 125degree, then it is ok. not care much about the precision.  tks a lot!

Vera - 

Which package of the LM60 is this customer using at the moment? (LM60 comes in SOT-23 or TO-92 package)

If they already know they want to go above 125C, what led them to selecting the LM60 over parts like the TMP235, LMT84/85/86/87? 

Seems logical to me that here you would want to use parts inside their ratings and these other devices seem to do that, and at a lower cost point, if the other parameters they might care about also fit with one of these devices. 

HI Josh,

they are using SOT-23 package. 

because it is legacy design, they did not predict it could get to such high temp, so they are in evaluating whether need change the solution.

so have you gotten the answer from internal whether the saying is true: when temp get to 130degree, the output voltage will definitely higher than 125degree?  tks a lot!