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LM2937: Junction Temperature

Part Number: LM2937

Hi Colleagues,

you help us (customer and me) understand why we are specifying different junction temperatures for different packages?

in another post it was said that these devices have the same die in all packages:

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/448445/lm2937-max-tj-for-sot-223/1612491?tisearch=e2e-sitesearch&keymatch=LM2937%20die#1612491

Best Regards Simon

  • Hi Simon, 

    Yes, they do share the same die. From a silicon perspective, they should behave similarly. However, when this part was released in its SOT 223 version, it seems like the test limits were different, therefore, the data sheet was set to -40 to 85. However, if you look at the Absolute Maximum Ratings, you will notice that the Max Junction Temperature is 150 and there is no package distinction. 

    Best, 

    Edgar Acosta