5.26.4.1 Junction Temperature

Select a junction temperature. Supported ranges include:

• Commercial (COM)
• Industrial (IND)
• Military (MIL)
• Automotive
• TGrade1
• TGrade2
• Custom

Consult the Microchip Data Sheet to find out which temperature range you should use.

If you select Custom, edit the Best, Typical, and Worst fields. Modify the range to the desired value (real) such that Best < Typical < Worst.

You can calculate junction temperature from values in the Microchip Data Sheet.

The temperature range represents the junction temperature of the device. For commercial and industrial devices, the junction temperature is a function of ambient temperature, air flow, and power consumption.

For military devices, the junction temperature is a function of the case temperature, air flow, and power consumption. Because Microchip devices are CMOS, power consumption must be calculated for each design. For most low power applications (e.g. 250mW), the default conditions are adequate.

Performance decreases approximately 2.5% for every 10 degrees C that the temperature values increase. Refer to the SmartPower online help for more information about power consumption.