1 Features
• 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
– Documentation available to aid system design
• 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)

2 Applications
• HEV/EV OBC & DC/DC converter
• Electronic power steering (EPS)
• Braking systems
• In-cabin sensing
• HVAC System
• Power Supply Modules

3 Description
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.