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LM50BIM3

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Texas Instruments Temperature Sensors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM50BIM3

Texas Instruments · Temperature Sensors · SOT-23

LM50BIM3 from Texas Instruments, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 +VS power_in Positive supply pin; the LM50 (LM50B/LM50C) is specified for a 4.5 V to 10 V supply, with an absolute maximum of 12 V.
2 VO output Analog temperature sensor output at 10 mV/°C with 500 mV at 0 °C, output impedance 2 kΩ typical and 4 kΩ maximum, and an absolute maximum output current of 10 mA.
3 GND power_in Device ground, connected to the negative supply terminal.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23
Category Sensors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Temperature accuracy LM50B (old chip), TA = 25°C TACY -2 2 °C TA = 25°C 8
Temperature accuracy LM50B (old chip), TA = TMAX = 100°C TACY -3 3 °C TA = TMAX = 100°C 8
Temperature accuracy LM50B (old chip), TA = TMIN = -25°C TACY -3.5 3 °C TA = TMIN = -25°C 8
Temperature accuracy LM50B (new chip), TA = 25°C TACY -2 2 °C TA = 25°C 8
Temperature accuracy LM50B (new chip), TA = TMAX = 125°C TACY -3 3 °C TA = TMAX = 125°C 8
Temperature accuracy LM50B (new chip), TA = TMIN = -40°C TACY -3.5 3 °C TA = TMIN = -40°C 8
Sensor gain (temperature coefficient) TC 9.7 10 10.3 mV/°C TA = TJ = TMIN to TMAX 8
Output nonlinearity (LM50) VONL -0.8 0.8 °C TA = TJ = TMIN to TMAX 8
Output impedance ZOUT 2000 4000 Ω TA = TJ = TMIN to TMAX 8
Long-term stability and drift TLTD -0.08 0.08 °C TJ = 125°C, 1000 hours 8
Operating current LM50 (old chip) IDD 95 180 μA TA = TMIN to TMAX, 4.5V ≤ +VS ≤ 10V 8
Operating current LM50 (new chip) IDD 52 90 μA TA = TMIN to TMAX, 4.5V ≤ +VS ≤ 10V 8
Line regulation (LM50) PSR -1.2 1.2 mV/V TA = TMIN to TMAX, 4.5V ≤ +VS ≤ 10V 8
Supply voltage +VS (LM50, absolute maximum) +VS -0.2 12 V 7
Output voltage VO (LM50, max = +VS + 0.6 V) VO -1 V 7
Output current IOUT IOUT 10 mA 7
Maximum junction temperature TJ 150 °C 7
Storage temperature (LM50) Tstg -65 150 °C 7
Supply voltage +VS (LM50 recommended) +VS 4.5 10 V LM50 (LM50B and LM50C) 7
Rated temperature TMIN/TMAX (LM50B old chip) TMIN, TMAX -25 100 °C LM50B old chip 7
Rated temperature TMIN/TMAX (LM50B new chip) TMIN, TMAX -40 125 °C LM50B new chip 7
Junction-to-ambient thermal resistance (old chip) RθJA 291.9 °C/W DBZ (SOT-23), 3 pins, old chip 7
Junction-to-ambient thermal resistance (new chip) RθJA 240.6 °C/W DBZ (SOT-23), 3 pins, new chip 7
Junction-to-case (top) thermal resistance (old chip) RθJC(top) 114.3 °C/W DBZ (SOT-23), 3 pins, old chip 7
Junction-to-case (top) thermal resistance (new chip) RθJC(top) 144.5 °C/W DBZ (SOT-23), 3 pins, new chip 7
Junction-to-board thermal resistance (old chip) RθJB 62.3 °C/W DBZ (SOT-23), 3 pins, old chip 7
Junction-to-board thermal resistance (new chip) RθJB 72.3 °C/W DBZ (SOT-23), 3 pins, new chip 7
Junction-to-top characterization parameter (old chip) ψJT 7.4 °C/W DBZ (SOT-23), 3 pins, old chip 7
Junction-to-top characterization parameter (new chip) ψJT 28.7 °C/W DBZ (SOT-23), 3 pins, new chip 7
Junction-to-board characterization parameter (old chip) ψJB 61 °C/W DBZ (SOT-23), 3 pins, old chip 7
Junction-to-board characterization parameter (new chip) ψJB 71.7 °C/W DBZ (SOT-23), 3 pins, new chip 7

CAD (KiCad official)

  • Symbol: LM50BIM3
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm50bim3-etched.step / lm50bim3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm50bim3.step / lm50bim3.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (36 pp, sha256 ad704d40b9e5a14d, retrieved 2026-10-21, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF