Many Linear Technology devices use an external PNP transistor to sense temperature. Common examples are LTC3880, LTC3883 and LTC2974. Accurate temperature sensing depends on proper PNP selection, ...
Substituting the values from Table 1 into Equation 3 and 4, values for η and R S are obtained for this 'thermal diode' treated as a 2-terminal diode and listed in Table 2. Figure 2 is a plot of two ...