Overview
The LMT87LPGM, produced by Texas Instruments, is a precision CMOS temperature sensor designed for high accuracy and low power consumption. This device features a linear analog output voltage that is inversely proportional to temperature, making it suitable for a wide range of temperature-sensing applications. The LMT87LPGM operates with a supply voltage as low as 2.7V and has a quiescent current of 5.4 µA, which is particularly beneficial for battery-powered systems. It is available in the TO-92S package, offering a fast thermal time constant and footprint compatibility with industry-standard temperature sensors like the LM20/19 and LM35.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 2.7 V | 5.5 V | V | |
| Quiescent Current | 5.4 µA | µA | ||
| Average Sensor Gain | -13.6 mV/°C | mV/°C | ||
| Temperature Accuracy (Typical) | ±0.4°C | ±2.7°C | °C | |
| Temperature Range | -50°C | 150°C | °C | |
| Output Drive Capability | ±50 µA | µA | ||
| Thermal Time Constant (Typical, 1.2 m/s Airflow) | 10 s | s | ||
| Package Type | TO-92S | |||
| Body Size (Nominal) | 4.00 mm × 3.15 mm | mm |
Key Features
- Very accurate with ±0.4°C typical accuracy (±2.7°C maximum)
- Low 2.7-V operation and low 5.4-µA quiescent current
- Wide temperature range: –50°C to 150°C
- Output is short-circuit protected
- Push-pull output with ±50-µA drive capability
- Footprint compatible with industry-standard LM20/19 and LM35 temperature sensors
- Cost-effective alternative to thermistors
- Fast thermal time constant (10 s typical at 1.2 m/s airflow)
Applications
- Automotive: Infotainment and cluster, powertrain systems
- Smoke and heat detectors
- Drones
- Appliances
- General temperature-sensing applications
Q & A
- What is the typical accuracy of the LMT87LPGM temperature sensor?
The LMT87LPGM has a typical accuracy of ±0.4°C. - What is the operating supply voltage range of the LMT87LPGM?
The operating supply voltage range is from 2.7 V to 5.5 V. - What is the quiescent current of the LMT87LPGM?
The quiescent current is 5.4 µA. - What is the average sensor gain of the LMT87LPGM?
The average sensor gain is -13.6 mV/°C. - What is the temperature range of the LMT87LPGM?
The temperature range is from -50°C to 150°C. - Is the output of the LMT87LPGM short-circuit protected?
Yes, the output is short-circuit protected. - What is the output drive capability of the LMT87LPGM?
The output drive capability is ±50 µA. - What package type is the LMT87LPGM available in?
The LMT87LPGM is available in the TO-92S package. - What are some common applications of the LMT87LPGM?
Common applications include automotive systems, smoke and heat detectors, drones, appliances, and general temperature-sensing applications. - How does the LMT87LPGM compare to thermistors?
The LMT87LPGM is a cost-effective alternative to thermistors, offering higher accuracy and a linear analog output.
