Hello Soeren, The ADS1675 AVDD current is about 70mA. If you have other components powered from the 5V supply, then these will add to the total current. There is no over-temp specification for the LP2992 that I can find, but these are typically set around 170C. Based on the thermal specs of the SOT23 (DBV) package, 1W of power dissipation in the LP2992 will likely cause over-temperature shutdown. Assuming you have other loads on the AVDD 5V supply increasing total current load to 100mA, then a 15V input voltage would result in about 1W of power dissipation, which would be enough to put the regulator into over-temperature mode. Regards, Keith
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