Thermal protection

nRF9160 has a built-in thermal protection mechanism to prevent RF Power Amplifier (PA) from breaking and the LTE modem from operating beyond the specified temperature range.

When the internal temperature sensor in nRF9160 measures a case temperature of approximately 90°C, the LTE modem and Global Positioning System (GPS) receiver are deactivated to minimize the internal generation of heat and to protect RF PA. When the sensor measures a temperature that is lower than approximately 90°C, the LTE modem is reactivated. Using the application processor is not limited by the thermal protection mechanism.

For more information on thermal protection, see Internal temperature %XTEMP in nRF91 AT Commands Reference Guide.