I need the figure：Vtempset VS Temperature. Do we have another way to set the temperature I need,like 30℃ or 20℃?
hi JQP ,
The target temperature or the tempset can be set via the voltage on IN2P pin. To know the exact voltage you need to set the desired temperature, this will depend on the thermistor that you will use as your temperature sensor. You need also to set the boundaries of your temperature. With the specifications that you define, use the figure 34 to set the VOUT1 values versus the temperature you set for the TLOW, TMID and THIGH.
you can also use the said voltages to be your input to the IN2P pin so set the target temp or TEMPSET.
Example, if you want to set the target temperature somewhere between the TLOW and TMID, then you should put the TEMPSET to around 0.75V.