JAJSE40A October 2017 – February 2018 UCC28780
The internal over-temperature shutdown threshold is higher than 125°C. If the junction temperature of the device reaches this threshold, the device initiates a UVLO reset and re-start fault cycle. If the temperature is still high at the end of the UVLO cycle, the protection cycle repeats. This internal protection is not suitable to substitute for the NTC for the hotspot temperature protection. The NTC thermistor can provide more accurate and remote temperature sensing with less compromise on PCB layout.