Supply Voltage (V)

3

6

9

12

15

18

21

24

27

30

33

36

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Measurement result

The device soldered to 30 gauge wire. The accuracy is read after consistently 10min working of the device at 25°C.

Figure 8-8. Accuracy (Due to Self-heating) vs Supply Voltage

8.2.1.3 Application Curve

DUT Te mperature (C)

-50

-25

0

25

50

75

100

125

150

0

0.25

0.5

0.75

1

1.25

1.5

1.75

2

1.75V

0.75V

0.1V

Figure 8-9. Output Transfer Function

8.3 System Examples

Figure 8-10 to Figure 8-12 show application circuit examples using the LM50 and LM50HV devices. Figure

8-10 shows a Centigrade Thermostat or Fan Controller configuration based on Schmitt trigger circuit. LM50 and

LM50HV devices can detect the ambient temperature in which the upper and lower temperature thresholds can

be adjusted by R1, R2 and R3 resistors.

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LM50, LM50HV

SNIS118I – JULY 1999 – REVISED OCTOBER 2025

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Product Folder Links: LM50 LM50HV