Overview
The LM75BIM-3/NOPB is a digital temperature sensor and thermal watchdog produced by Texas Instruments. It is designed to provide accurate temperature readings and thermal management in a variety of applications. The LM75B integrates a Sigma-Delta analog-to-digital converter and an I2C interface, making it suitable for systems where precise temperature monitoring is crucial.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3 V to 5.5 V | V |
| Supply Current (Operating) | 280 μA (typical) | μA |
| Supply Current (Shutdown) | 4 μA (typical) | μA |
| Temperature Accuracy (-25°C to 100°C) | ±2°C (maximum) | °C |
| Temperature Accuracy (-55°C to 125°C) | ±3°C (maximum) | °C |
| Temperature Measuring Range | -55°C to 125°C | °C |
| I2C Interface Speed | Up to 400 kHz | kHz |
| Package Type | SOIC (8 pins) | |
| Address Pins | 3 (allowing up to 8 devices on the same bus) |
Key Features
- No external components required for operation.
- Shutdown mode to minimize power consumption.
- Up to eight LM75 devices can be connected to a single I2C bus.
- Power-up defaults permit stand-alone operation as a thermostat.
- UL recognized component.
- Dedicated over-temperature output (O.S.) with programmable limit and hysteresis.
- Programmable fault tolerance for defining the number of consecutive error conditions before O.S. is activated.
- Integrated low-pass filters on SDA and SCL lines for increased communication reliability in noisy environments.
- Bus fault timeout feature to reset the device to IDLE state if the SDA line is held low for longer than tTIMEOUT.
Applications
- Base stations.
- Electronic test equipment.
- Office electronics.
- Personal computers.
- General system thermal management.
- Communications infrastructure.
- Environmental monitoring.
Q & A
- What is the temperature accuracy of the LM75BIM-3/NOPB? The temperature accuracy is ±2°C from -25°C to 100°C and ±3°C from -55°C to 125°C.
- What is the supply voltage range for the LM75BIM-3/NOPB? The supply voltage range is 3 V to 5.5 V.
- How many devices can be connected to a single I2C bus? Up to eight LM75 devices can be connected to a single I2C bus.
- What is the purpose of the over-temperature output (O.S.)? The O.S. output is dedicated for over-temperature detection with programmable limit and hysteresis.
- Does the LM75BIM-3/NOPB have any power-saving features? Yes, it has a shutdown mode to minimize power consumption, with a typical current of 4 μA in shutdown mode.
- What is the I2C interface speed of the LM75BIM-3/NOPB? The I2C interface operates up to 400 kHz.
- What type of package is the LM75BIM-3/NOPB available in? It is available in an SOIC (8-pin) package.
- Is the LM75BIM-3/NOPB UL recognized? Yes, the LM75B and LM75C are UL recognized components.
- What are the key applications of the LM75BIM-3/NOPB? Key applications include base stations, electronic test equipment, office electronics, personal computers, and general system thermal management.
- Does the LM75BIM-3/NOPB require external components for operation? No, it does not require external components for operation.
