Home Sensors Temperature sensors Analog temperature sensors
Home
Sensors
Temperature sensors
Analog temperature sensors

LM50

ACTIVE

±2°C analog output temperature sensor, with 10mV/°C gain

Order now
Data sheet

LM50

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 2, 3 Operating temperature range (°C) -40 to 150 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 10 Supply current (max) (µA) 130 Interface type Analog output Sensor gain (mV/°C) 10 Rating Catalog Features Industry standard pinout, UL recognized
Local sensor accuracy (max) 2, 3 Operating temperature range (°C) -40 to 150 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 10 Supply current (max) (µA) 130 Interface type Analog output Sensor gain (mV/°C) 10 Rating Catalog Features Industry standard pinout, UL recognized
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
  • LM50B Temperature Accuracy:
    • ±2°C (Max) at 25°C
    • ±3°C (Max) over temperature range
  • LM50C Temperature Accuracy:
    • ±3°C (Max) at 25°C
    • ±4°C (Max) over temperature range
  • Operating supply range: 4.5V to 10V
  • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • Nonlinearity: ±0.8°C (Max)
  • DC Output Impedance: 2kΩ/4kΩ (typ/Max)
    • Enables driving large capacitive loads
  • UL Recognized Component
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
  • LM50B Temperature Accuracy:
    • ±2°C (Max) at 25°C
    • ±3°C (Max) over temperature range
  • LM50C Temperature Accuracy:
    • ±3°C (Max) at 25°C
    • ±4°C (Max) over temperature range
  • Operating supply range: 4.5V to 10V
  • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • Nonlinearity: ±0.8°C (Max)
  • DC Output Impedance: 2kΩ/4kΩ (typ/Max)
    • Enables driving large capacitive loads
  • UL Recognized Component

The LM50 device is a precision analog temperature sensor that can measure temperatures from -40°C to 125°C using a single positive supply. The output voltage of the device is linearly proportional to temperature (10mV/°C) and has a DC offset of 500mV at 0°C. The offset allows reading negative temperatures without the need for a negative supply. The output voltage of the LM50 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying analog-to-digital converter (ADC) interfacing.

Unlike NTC thermistors, LM50 does not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements in a single supply environment. Due to low quiescent current of LM50 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air) and the device is designed for remote or battery-powered applications. Trimming and calibration of the LM50 at the wafer level provide long-term availability, low cost and consistent accuracy in two grades: LM50B (±2°C at 25°C, ±3°C over temperature range) and LM50C (±3°C at 25°C, ±4°C over temperature range).

The LM50 device is a precision analog temperature sensor that can measure temperatures from -40°C to 125°C using a single positive supply. The output voltage of the device is linearly proportional to temperature (10mV/°C) and has a DC offset of 500mV at 0°C. The offset allows reading negative temperatures without the need for a negative supply. The output voltage of the LM50 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying analog-to-digital converter (ADC) interfacing.

Unlike NTC thermistors, LM50 does not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements in a single supply environment. Due to low quiescent current of LM50 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air) and the device is designed for remote or battery-powered applications. Trimming and calibration of the LM50 at the wafer level provide long-term availability, low cost and consistent accuracy in two grades: LM50B (±2°C at 25°C, ±3°C over temperature range) and LM50C (±3°C at 25°C, ±4°C over temperature range).
filter Find other Analog temperature sensors
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
LM50-Q1 ACTIVE Automotive ±3°C analog output temperature sensor with 10mV/°C gain Automotive qualified version
Same functionality with different pin-out to the compared device
NEW ISOTMP35 ACTIVE 1.2°C basic isolated temperature sensor with 10mV/°C analog output First-in-market integrated isolation with the same sensor gain (10 mV/°C). Higher accuracy (±1.2°C) and wider temperature range (-40 to 150°C).
TMP235 ACTIVE 1C analog temperature sensor, 10 mV/C Higher accuracy (±1°C) with lower power demand (12uA), wider temperature range (-40 to 150°C). Available in either a pin-to-pin SOT-23 or smaller SC70 package.
TMP300 ACTIVE Resistor-Programmable, up to 18V-Capable Temp Switch and Analog Out Sensor Temperature switch with both analog and comparator outputs with a standard sensor gain (10 mV/°C), and supporting voltage range (1.8 to 18V).

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LM50 Industry-Standard, Analog Centigrade (10mV/°C) Temperature Sensor in SOT-23 Package datasheet (Rev. H) PDF | HTML 20 May 2025
Certificate UL Certificate of Compliance Vol1-Sec5 E232195 06 Aug 2018
Application note Tiny Temperature Sensors for Remote Systems 17 Feb 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Reference designs

PMP10260 — 24Vdc Input (Double Car Battery) Automotive Multiphase Sync-Buck Reference Design

This high-efficiency, high-power reference design uses the LM5119 two-phase synchronous-buck controller to regulate 14.4V at 60A. This design can be used to supply single car battery power from a double battery system, often found in trucks. Features include input EMI filtering, output hot swap (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBZ) 3 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos