TMP37FT9Z -Low Voltage Temperature Sensors

GENERAL DESCRIPTION 

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 V

OUT

TMP35/

TMP36/

TMP37

00337-001

Figure 1. 

PIN CONFIGURATIONS 

1

2

3

5

4

TOP VIEW

(Not to Scale)

NC = NO CONNECT

V

OUT

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

V

OUT

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. 

The TMP37 is intended for applications over the range of 5°C 

to 100°C and provides an output scale factor of 20 mV/°C. The 

TMP37 provides a 500 mV output at 25°C. Operation extends 

to 150°C with reduced accuracy for all devices when operating 

from a 5 V supply. 

The TMP35/TMP36/TMP37 are available in low cost 3-lead 

TO-92, 8-lead SOIC_N, and 5-lead SOT-23 surface-mount 

packages.

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