SLOSE86B july 2022 – july 2023 TAS2781
PRODUCTION DATA
The TAS2781 monitors the temperature of the internal power FETs. If the maximum continue power is high and power FETs temperature goes above a threshold, an internal protection circuit will trigger a thermal foldback and, if temperature still incraeses, shutdown the device.
The protection mechanism is based on two thresholds TH1 and TH2. The TH1 threshold is set at a temperature 116 °C higher than the temperature measured by the internal bandgap but not less than 250 °C. The TH1 threshold triggers a thermal foldback.
The TH2 threshold is 40 °C above TH1 and triggers thermal shutdown.
The two detection mechanisms can be disabled by setting to low the bits TG_TH2 and TG_TH1.