SNVSAT4A September 2017 – June 2021 LP873220-Q1
The LP873220-Q1 has an overtemperature protection function that operates to protect itself from short-term misuse and overload conditions. When the junction temperature exceeds around 150°C, the regulators are disabled immediately (without switching ramp and shutdown delays), the TDIE_SD_INT bit in the INT_TOP_1 register is set to 1, the nINT signal is pulled low, and the device enters STANDBY. The nINT is cleared by writing 1 to the TDIE_SD_INT bit. If the temperature is above thermal shutdown level, then the interrupt is not cleared. The host can read the status of the thermal shutdown from the TDIE_SD_STAT bit in the TOP_STAT register. The regulators cannot be enabled as long as the junction temperature is above the thermal shutdown level or while the thermal shutdown interrupt is pending.