STLM20 STMicroelectronics, STLM20 Datasheet - Page 5

• Manufacturer Part Number: STLM20
• Description: Ultra-low Current 2.4v Precision Analog Temperature Sensor
• Manufacturer: STMicroelectronics

1
Description
The STLM20 is a precision analog output temperature sensor for low current applications
where maximizing battery life is important. It operates over a –55°C to 130°C (grade 7) or
–40°C to 85°C (grade 9) temperature range. The power supply operating range is 2.4V to
5.5V. The accuracy of the STLM20 is ± 1.5°C, at an ambient temperature of 25°C. The
temperature error increases linearly and reaches a maximum of ±2.5°C at the temperature
range extremes. The temperature range is affected by the power supply voltage. For the
temperature grade 7 device, a power supply voltage of 2.7V to 5.5V, the temperature range
extremes are +130°C and –55°C. Decreasing the power supply voltage to 2.4V changes the
negative extreme to –30°C, while the positive remains at +130°C.
The STLM20 has a maximum quiescent supply current of 8µA. Therefore, self-heating is
negligible.
Figure 1.
1. Pin 2 GND may be grounded or left floating (SC70-5 only). For optimum thermal conductivity to the PC
Table 1.
Figure 2.
1. Pin 1 NC should be left floating or grounded.
2. Pin 2 GND may be grounded or left floating. For optimum thermal conductivity to the PC board ground
board ground plane, it should be grounded.
plane, it should be grounded.
V
GND
V
NC
OUT
CC
Supply voltage
Ground
Output voltage
No connect
Logic diagram
Signal names
Connections (top view)
GND (2)
V OUT
NC (1)
SOT323-5(SC70-5)
1
2
3
5
4
AI12253
GND
V CC
GND
V CC
STLM20
(1)
AI12252
V OUT
NC (1)
V OUT
UDFN-4Lead
1
2
4
3
AI12253_a
V CC
GND
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