Temperature Sensor With I2C and SMBus Interface With Alert Function

Temperature Sensor With I2C and SMBus Interface With Alert Function - TMP100-Q1


The TMP100-Q1 and TMP101-Q1 devices are digital temperature sensors ideal for negative temperature coefficient (NTC) and positive temperature coefficient (PTC) thermistor replacement. The devices offer a typical accuracy of ±1°C without requiring calibration or external component signal conditioning. Device temperature sensors are highly linear and do not require complex calculations or look-up tables to derive the temperature. The on-chip, 12-bit ADC offers resolutions down to 0.0625°C. The devices are available in 6-Pin SOT-23 packages.

The TMP100-Q1 and TMP101-Q1 devices feature SMBus, Two-Wire, and I2C interface compatibility. The TMP100-Q1 device allows up to eight devices on one bus. The TMP101-Q1 device offers an SMBus Alert function with up to three devices per bus.

The TMP100-Q1 and TMP101-Q1 devices are ideal for extended temperature measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.

The TMP100-Q1 and TMP101-Q1 devices are specified for operation over a temperature range of −55°C to 125°C.


  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: −55°C to +125°C Operating Temperature Range
    • HBM ESD Component Classification Level 2
    • CDM ESD Component Classification Level C5
  • Digital Output: SMBus™, Two-Wire, and I2C Interface Compatibility
  • Resolution: 9 to 12 Bits, User-Selectable
  • Accuracy:
    • ±1°C (Typical) from –55°C to 125°C
    • ±2°C (Maximum) from –55°C to 125°C
  • Low Quiescent Current: 45-µA, 0.1-µA Standby
  • Wide Supply Range: 2.7 V to 5.5 V
  • TMP100-Q1 Features Two Address Pins
  • TMP101-Q1 Features One Address Pin and an ALERT Pin
  • 6-Pin SOT-23 Package

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Local Digital Temperature Sensors

Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Typ) (uA)
Supply Current (Max) (uA)
Package Group
Package Size: mm2:W x L (PKG)
Iq (Typ) (uA)
TMP100-Q1 LM73-Q1 TMP101-Q1
I2C, SMBus, 2-Wire    I2C, SMBus, 2-Wire    I2C, SMBus, 2-Wire   
2    1.45    2   
12    14    12   
-40 to 125    -40 to 125    -40 to 125   
2.7    2.7    2.7   
5.5    5.5    5.5   
45    320    45   
75    550    75   
Configurable Resolution, One-Shot Conversion, Shutdown    Configurable Resolution, Programmable Alert, One-Shot Conversion, Shutdown
UL Recognized   
Configurable Resolution
Programmable Alert
Fault Queue
One-Shot Conversion
8    6    3   
Automotive    Automotive    Automotive   
SOT-23    SOT-23-THIN    SOT-23   
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    6SOT-23-THIN: 8 mm2: 2.8 x 2.9(SOT-23-THIN)    6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
45    320    45   

Other qualified versions of TMP100-Q1

Version Part Number Definition
Enhanced Product TMP100-EP Supports Defense, Aerospace and Medical Applications
Catalog TMP100 TI's standard catalog product