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LM57: Will the LM57 reliably recognize that it is below the programmed V_trip

Part Number: LM57

We’re looking into using the LM57 as a temp sensor to switch off a load when the chip temp rises above -37C. We want to guarantee that the load is switched on from -55C to -37C.  

Our low level functional temp range is -55C; this is 5C below the LM57 datasheet specified operating temp (-50C).

 

Question:

Once below -50C, will the LM57 reliably recognize that it is below the programmed V_trip (Note: V_trip is -37C for our application)? Will the LM57 maintain the correct state for the open-drain outputs or could it do something unpredictable?

 

Also,

Looking at the VTEMP graph below, I’m assuming that once below -50C, the VTEMP voltage will continue in the same direction with less accuracy/resolution. Is this correct?