Product details

Local sensor accuracy (max) 2, 3 Rating Catalog 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 Features Industry standard pinout, UL recognized
Local sensor accuracy (max) 2, 3 Rating Catalog 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 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
  • LM50HV (Next-generation):
    • Drop-in replacement for LM50B/LM50C
    • Wide supply range: 3V to 36V
    • Temperature Accuracy:
      • ±2°C (Max) over 20°C to 70°C
      • ±2.5°C (Max) over -10°C to 125°C
      • ±3°C (Max) over -20°C to 150°C
    • Quiescent Current (Typ): 52μA
    • Nonlinearity: ±1.2°C (Max)
  • LM50:
    • Operating supply range: 4.5V to 10V
    • 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
    • Quiescent Current (Typ): 95μA
    • Nonlinearity: ±0.8°C (Max)
  • Available in Standard SOT23-3 package
  • DC Output Impedance: 2kΩ/4kΩ (Typ/Max)
    • Enables driving large capacitive loads
  • Designed for LDO-less applications
  • UL Recognized Component (LM50B, LM50C)
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
  • LM50HV (Next-generation):
    • Drop-in replacement for LM50B/LM50C
    • Wide supply range: 3V to 36V
    • Temperature Accuracy:
      • ±2°C (Max) over 20°C to 70°C
      • ±2.5°C (Max) over -10°C to 125°C
      • ±3°C (Max) over -20°C to 150°C
    • Quiescent Current (Typ): 52μA
    • Nonlinearity: ±1.2°C (Max)
  • LM50:
    • Operating supply range: 4.5V to 10V
    • 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
    • Quiescent Current (Typ): 95μA
    • Nonlinearity: ±0.8°C (Max)
  • Available in Standard SOT23-3 package
  • DC Output Impedance: 2kΩ/4kΩ (Typ/Max)
    • Enables driving large capacitive loads
  • Designed for LDO-less applications
  • UL Recognized Component (LM50B, LM50C)

The LM50 and LM50HV devices are precision analog temperature sensors that can measure temperatures from -40°C to 125°C (for LM50) and -40°C to 150°C (for LM50HV) using a single positive supply. Unlike NTC thermistors, LM50 and LM50HV 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 the LM50 and LM50HV ranges from 100mV (at -40°C) to 1.75V (at 125°C for LM50) and 2V (at 150°C for LM50HV), simplifying analog-to-digital converter (ADC) interfacing.

LM50HV is designed for LDO-less application due to stable functionality across wide supply range of 3V to 36V. Trimming and calibration of the LM50 and LM50HV at the wafer level provide long-term availability, low cost and consistent accuracy: LM50B (±3°C over temperature range), LM50C (±4°C over temperature range) and LM50HV (±3°C over -20°C to 150°C).

The LM50 and LM50HV devices are precision analog temperature sensors that can measure temperatures from -40°C to 125°C (for LM50) and -40°C to 150°C (for LM50HV) using a single positive supply. Unlike NTC thermistors, LM50 and LM50HV 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 the LM50 and LM50HV ranges from 100mV (at -40°C) to 1.75V (at 125°C for LM50) and 2V (at 150°C for LM50HV), simplifying analog-to-digital converter (ADC) interfacing.

LM50HV is designed for LDO-less application due to stable functionality across wide supply range of 3V to 36V. Trimming and calibration of the LM50 and LM50HV at the wafer level provide long-term availability, low cost and consistent accuracy: LM50B (±3°C over temperature range), LM50C (±4°C over temperature range) and LM50HV (±3°C over -20°C to 150°C).
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Technical documentation

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Type Title Date
* Data sheet LM50 and LM50HV Industry-Standard, Analog Centigrade (10mV/°C) Temperature Sensor in the SOT-23 Package datasheet (Rev. I) PDF | HTML 13 Oct 2025
EVM User's guide LM50HV Evaluation Module User's Guide PDF | HTML 12 Sep 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

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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 (...)
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SOT-23 (DBZ) 3 Ultra Librarian

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