Overview
The STLM75M2F, produced by STMicroelectronics, is a high-precision digital CMOS temperature sensor IC. It features a sigma-delta temperature-to-digital converter and an I2C-compatible serial digital interface. This device is designed for various applications including personal computers, system thermal management, electronics equipment, and industrial controllers. The STLM75M2F is packaged in industry-standard 8-lead SO8 and MSOP8 (TSSOP8) packages, making it compatible with existing designs. It is also pin-for-pin and software compatible with the LM75B, allowing for easy integration as a drop-in replacement.
Key Specifications
| Parameter | Value |
|---|---|
| Temperature Measurement Range | –55°C to +125°C (–67°F to +257°F) |
| Accuracy | ±0.5°C (typ), ±2°C (max) from –25°C to +100°C, ±3°C (max) over full range |
| Resolution | Up to 0.5°C |
| Supply Voltage | 2.7 V to 5.5 V |
| Supply Current | 125 μA (typ) at 3.3 V |
| Conversion Time | 150 ms (max) |
| Interface | 2-wire I2C/SMBus-compatible serial interface |
| Package | SO8, MSOP8 (TSSOP8) |
Key Features
- Measures temperatures from –55°C to +125°C (–67°F to +257°F) with ±0.5°C (typ) accuracy
- Low operating current: 125 μA (typ)
- No external components required
- 2-wire I2C/SMBus-compatible serial interface with bus time-out feature and selectable bus address
- Programmable temperature threshold and hysteresis set points
- Power-up defaults permit standalone operation as a thermostat
- Shutdown mode to minimize power consumption
- Output pin (open drain) can be configured for interrupt or comparator/thermostat mode (dual purpose event pin)
Applications
The STLM75M2F is targeted for a variety of applications, including:
- Personal computers and peripherals
- System thermal management
- Electronics equipment
- Industrial controllers
- Communications equipment
Q & A
- What is the temperature measurement range of the STLM75M2F? The STLM75M2F measures temperatures from –55°C to +125°C (–67°F to +257°F).
- What is the accuracy of the STLM75M2F? The accuracy is ±0.5°C (typ), ±2°C (max) from –25°C to +100°C, and ±3°C (max) over the full range.
- What is the supply voltage range for the STLM75M2F? The supply voltage range is from 2.7 V to 5.5 V.
- What is the typical supply current of the STLM75M2F at 3.3 V? The typical supply current is 125 μA at 3.3 V.
- What type of interface does the STLM75M2F use? The STLM75M2F uses a 2-wire I2C/SMBus-compatible serial interface.
- Is the STLM75M2F compatible with other devices? Yes, it is pin-for-pin and software compatible with the LM75B.
- What are the available packages for the STLM75M2F? The available packages are SO8 and MSOP8 (TSSOP8).
- Does the STLM75M2F require external components to measure temperature? No, it does not require any external components to measure temperature.
- Can the STLM75M2F be used as a thermostat? Yes, power-up defaults permit standalone operation as a thermostat.
- How can the output pin of the STLM75M2F be configured? The output pin (open drain) can be configured for interrupt or comparator/thermostat mode (dual purpose event pin).
