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LM50-Q1

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Automotive ±3°C analog output temperature sensor with 10mV/°C gain

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Data sheet

LM50-Q1

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 3 Rating Automotive Operating temperature range (°C) -40 to 125 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 Features Industry standard pinout, UL recognized TI functional safety category Functional Safety-Capable
Local sensor accuracy (max) 3 Rating Automotive Operating temperature range (°C) -40 to 125 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 Features Industry standard pinout, UL recognized TI functional safety category Functional Safety-Capable
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • AEC-Q100 Qualified for automotive applications
    • LM50-Q1 (Grade-1): –40°C to +125°C
    • LM50HV-Q1 (Grade-0): –40°C to +150°C
  • Functional safety-capable
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
  • LM50HV-Q1 (Next-generation):
    • Wide supply range: 3V to 36V
    • ±2°C (Max) accuracy over 20°C to 70°C
    • ±2.5°C (Max) accuracy over 0°C to 100°C
    • ±3°C (Max) accuracy over −20°C to 125°C
    • ±3.5°C (Max) accuracy over −40°C to 150°C
    • Quiescent Current (Typ): 52µA
  • LM50-Q1:

    • Operating supply range: 4.5V to 10V

    • ±3°C (Max) accuracy at 25°C
    • ±4°C (Max) accuracy over −40°C to 125°C
    • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • DC Output Impedance: 2kΩ/4kΩ (Typ/Max)
    • Enables driving large capacitive loads
  • UL Recognized Component (LM50-Q1)
  • AEC-Q100 Qualified for automotive applications
    • LM50-Q1 (Grade-1): –40°C to +125°C
    • LM50HV-Q1 (Grade-0): –40°C to +150°C
  • Functional safety-capable
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
  • LM50HV-Q1 (Next-generation):
    • Wide supply range: 3V to 36V
    • ±2°C (Max) accuracy over 20°C to 70°C
    • ±2.5°C (Max) accuracy over 0°C to 100°C
    • ±3°C (Max) accuracy over −20°C to 125°C
    • ±3.5°C (Max) accuracy over −40°C to 150°C
    • Quiescent Current (Typ): 52µA
  • LM50-Q1:

    • Operating supply range: 4.5V to 10V

    • ±3°C (Max) accuracy at 25°C
    • ±4°C (Max) accuracy over −40°C to 125°C
    • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • DC Output Impedance: 2kΩ/4kΩ (Typ/Max)
    • Enables driving large capacitive loads
  • UL Recognized Component (LM50-Q1)

The LM50-Q1 (Grade-1) and LM50HV-Q1 (Grade-0) devices are AEC-Q100 automotive-grade analog temperature sensor that can measure temperature up to 125°C and 150°C, respectively, using a single positive supply. Unlike NTC thermistors, LM50-Q1 and LM50HV-Q1 do not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements. The output voltage of the devices are 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 these devices ranges from 100mV (at -40°C) to 1.75V (at 125°C) and 2V (at 150°C only for LM50HV-Q1), simplifying automotive ADC interfacing (including ADC integrated in MCU).

LM50HV-Q1 is designed for LDO-less application due to stable functionality across wide supply range of 3V to 36V. Trimming and calibration of LM50-Q1 and LM50HV-Q1 at the wafer level provide low cost and consistent accuracy: LM50-Q1 (±4°C across –40°C to 125°C) and LM50HV-Q1 (±3°C across –20°C to 125°C, ±3.5°C across –40°C to 150°C). Functional safety documentation is also available.

The LM50-Q1 (Grade-1) and LM50HV-Q1 (Grade-0) devices are AEC-Q100 automotive-grade analog temperature sensor that can measure temperature up to 125°C and 150°C, respectively, using a single positive supply. Unlike NTC thermistors, LM50-Q1 and LM50HV-Q1 do not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements. The output voltage of the devices are 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 these devices ranges from 100mV (at -40°C) to 1.75V (at 125°C) and 2V (at 150°C only for LM50HV-Q1), simplifying automotive ADC interfacing (including ADC integrated in MCU).

LM50HV-Q1 is designed for LDO-less application due to stable functionality across wide supply range of 3V to 36V. Trimming and calibration of LM50-Q1 and LM50HV-Q1 at the wafer level provide low cost and consistent accuracy: LM50-Q1 (±4°C across –40°C to 125°C) and LM50HV-Q1 (±3°C across –20°C to 125°C, ±3.5°C across –40°C to 150°C). Functional safety documentation is also available.
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Technical documentation

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Type Title Date
* Data sheet LM50-Q1 and LM50HV-Q1 - Automotive (Grade 1, Grade 0), Industry-Standard (10mV/°C) Analog Temperature Sensor with ±2°C or ±3°C Accuracy, in SOT-23 Package datasheet (Rev. A) PDF | HTML 02 Feb 2026
Functional safety information LM50-Q1 Functional Safety User's Guide 17 Feb 2020
Certificate UL Certificate of Compliance Vol1-Sec5 E232195 06 Aug 2018

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Evaluation board

LM50HVEVM — LM50 high-voltage evaluation module

The LM50HV evaluation module (EVM) features a single-pole-double-throw (SPDT) switch that allows users to connect a power supply through test points. The LM50HVEVM uses a MSP430F5528 microcontroller along with a USB interface to enable users to datalog results and interface with the LM50HV analog (...)
User guide: PDF | HTML
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SOT-23 (DBZ) 3 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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