Overview
The LM50BIM3X/NOPB, manufactured by Texas Instruments, is a precision integrated-circuit temperature sensor designed to operate over a wide temperature range. This device is part of the LM50 series, which includes the LM50 and LM50-Q1 models. It is calibrated directly in degrees Celsius and features a linear output voltage that is proportional to temperature, with a scale factor of 10 mV/°C and a 500 mV offset. This allows the sensor to read negative temperatures without the need for a negative supply voltage. The LM50BIM3X/NOPB is suitable for various applications requiring accurate temperature sensing in a single-supply environment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 10 | V |
| Operating Temperature Range | –40 to 125 | °C |
| Temperature Accuracy at 25°C | ±2°C | |
| Temperature Accuracy over Full Range | ±4°C | |
| Output Voltage Scale Factor | 10 mV/°C | |
| Output Voltage Offset | 500 mV | |
| Quiescent Current | < 130 µA | |
| Output Impedance | Typically 2 kΩ, Max 4 kΩ | |
| Package Type | SOT-23 (DBZ) | |
| Number of Pins | 3 | |
| Junction-to-Ambient Thermal Resistance | 291.9 °C/W |
Key Features
- Calibrated directly in degrees Celsius with a linear output voltage proportional to temperature (10 mV/°C) and a 500 mV offset.
- Operates from a single positive supply voltage of 4.5 V to 10 V.
- Low quiescent current of less than 130 µA, minimizing self-heating to less than 0.2°C in still air.
- High accuracy with ±2°C at 25°C and ±4°C over the full –40°C to 125°C range.
- No external calibration or trimming required due to wafer-level trimming and calibration.
- Suitable for remote applications and has low self-heating.
- UL recognized component.
Applications
- Automotive systems.
- Computers and computer peripherals.
- Disk drives.
- Battery management systems.
- FAX machines and printers.
- Portable medical instruments.
- HVAC systems.
- Power supply modules.
Q & A
- What is the operating temperature range of the LM50BIM3X/NOPB?
The operating temperature range is –40°C to 125°C.
- What is the output voltage scale factor of the LM50BIM3X/NOPB?
The output voltage scale factor is 10 mV/°C.
- What is the typical quiescent current of the LM50BIM3X/NOPB?
The typical quiescent current is less than 130 µA.
- What is the package type of the LM50BIM3X/NOPB?
The package type is SOT-23 (DBZ) with 3 pins.
- Does the LM50BIM3X/NOPB require external calibration or trimming?
No, it does not require external calibration or trimming due to wafer-level trimming and calibration.
- What is the junction-to-ambient thermal resistance of the LM50BIM3X/NOPB?
The junction-to-ambient thermal resistance is 291.9 °C/W.
- What are some common applications of the LM50BIM3X/NOPB?
Common applications include automotive systems, computers, disk drives, battery management systems, FAX machines, printers, portable medical instruments, HVAC systems, and power supply modules.
- What is the output impedance of the LM50BIM3X/NOPB?
The output impedance is typically 2 kΩ, with a maximum of 4 kΩ.
- How accurate is the LM50BIM3X/NOPB at 25°C and over the full temperature range?
The accuracy is ±2°C at 25°C and ±4°C over the full –40°C to 125°C range.
- Is the LM50BIM3X/NOPB UL recognized?
