Packaging information
| Package | Pins SOT-23 (DBZ) | 3 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the LM50-Q1
- AEC-Q100 Qualified for automotive applications
- LM50-Q1 (Grade-1): –40°C to +125°C operating temperature
- Device HBM ESD classification level 2
- Functional safety-capable
- Industry-Standard Sensor Gain/Offset:
- 10mV/°C, 500mV at 0°C
- LM50-Q1 Temperature Accuracy:
- ±3°C (Max) at 25°C
- ±4°C (Max) over −40°C to 125°C
- 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
Description for the LM50-Q1
The LM50-Q1 device is an automotive-grade analog temperature sensor (AEC-Q100 Grade 1 qualified) 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-Q1 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying automotive ADC interfacing (including ADC integrated in MCU).
Unlike NTC thermistors, LM50-Q1 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-Q1 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air) and the device is ideal for automotive applications such as ECUs. Trimming and calibration of LM50-Q1 at the wafer level verify low cost and consistent accuracy: (±3°C at 25°C, ±4°C across –40°C to 125°C). Functional safety documentation is also available for systems requiring enhanced reliability.