The set resistor (R_SET) provides a threshold voltage for the comparator input. The TMP300 trips when the V_TEMP pin exceeds the T_SET voltage. The value of the set resistor is determined by the analog output function and the 3-μA internal bias current.

To set the TMP300 to trip at a preset value, calculate the R_SET resistor value according to Equation 1 or Equation 2:

Equation 1.

where

• T_SET is in °C; or

Equation 2.

where

• T_SET is in °C.