The TMP35/TMP36/TMP37 are low voltage， precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius （centigrade） temperature. The TMP35/TMP36/TMP37 do not require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the ?40°C to +125°C temperature range. The low output impedance of the TMP35/TMP36/TMP37 and its linear output and precise calibration simplify interfacing to temperature control circuitry and ADCs. All three devices are intended for single-supply operation from 2.7 V to 5.5 V maximum. The supply current runs well below 50 μA， providing very low self-heating—less than 0.1°C in still air. In addition， a shutdown function is provided to cut the supply current to less than 0.5 μA. FUNCTIONAL BLOCK DIAGRAM +VS （2.7V TO 5.5V） SHUTDOWN VOUT TMP35/ TMP36/ TMP37 00337-001 Figure 1. PIN CONFIGURATIONS 1 2 3 5 4 TOP VIEW （Not to Scale） NC = NO CONNECT VOUT SHUTDOWN GND NC +VS 00337-002 Figure 2. RJ-5 （SOT-23） 1 2 3 4 8 7 6 5 TOP VIEW （Not to Scale） NC = NO CONNECT VOUT SHUTDOWN NC NC +VS NC NC GND 00337-003 Figure 3. R-8 （SOIC_N） 1 2 3 BOTTOM VIEW （Not to Scale） PIN 1， +VS; PIN 2， VOUT; PIN 3， GND 00337-004 Figure 4. T-3 （TO-92） The TMP35 is functionally compatible with the LM35/LM45 and provides a 250 mV output at 25°C. The TMP35 reads temperatures from 10°C to 125°C. The TMP36 is specified from ?40°C to +125°C， provides a 750 mV output at 25°C， and operates to 125°C from a single 2.7 V supply. The TMP36 is functionally compatible with the LM50. Both the TMP35 and TMP36 have an output scale factor of 10 mV/°C.