Overview
The LM75BIMMX-3/NOPB is a digital temperature sensor and thermal watchdog produced by Texas Instruments. This component is designed to provide accurate digital temperature readings and is suitable for a wide range of applications requiring temperature monitoring and control. The LM75B offers high accuracy and reliability, making it a popular choice in various industrial, automotive, and consumer electronics.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Temperature Accuracy | -2 | - | 2 | °C (TA = -25°C to 100°C) |
| Temperature Accuracy | -3 | - | 3 | °C (TA = -55°C to 125°C) |
| Resolution | - | - | - | 9 Bits |
| Temperature Conversion Time | - | - | 100 ms | - |
| Quiescent Current (I2C Inactive) | - | 0.25 mA | 1 mA | - |
| Shutdown Mode Current (+VS = 3 V) | - | - | 4 μA | - |
| Shutdown Mode Current (+VS = 5 V) | - | - | 6 μA | - |
| Output Saturation Voltage (IOUT = 4.0 mA) | - | - | 0.8 V | - |
| Operating Temperature Range | -55°C | - | 125°C | - |
Key Features
- High Accuracy: The LM75B provides temperature readings with an accuracy of ±2°C from -25°C to 100°C and ±3°C over -55°C to 125°C.
- 9-Bit Digital Temperature Readings: Offers a resolution of 0.5°C per LSB in two's complement format.
- Low Power Consumption: Features low quiescent current in I2C inactive mode and shutdown mode, making it energy-efficient.
- Programmable O.S. Output Polarity: The O.S. output can be set to either active low or active high via the configuration register.
- Thermal Watchdog Functionality: Includes an overtemperature shutdown feature to protect the system from excessive temperatures.
- I2C Interface: Supports I2C communication for easy integration with microcontrollers and other I2C devices.
Applications
The LM75BIMMX-3/NOPB is versatile and can be used in various applications, including:
- Industrial Automation: Temperature monitoring in industrial control systems and automation equipment.
- Automotive Systems: Temperature sensing in automotive electronics, such as engine control units and climate control systems.
- Consumer Electronics: Temperature monitoring in consumer devices like computers, servers, and other electronic equipment.
- Medical Devices: Accurate temperature sensing in medical equipment and diagnostic devices.
Q & A
- What is the temperature accuracy of the LM75B? The LM75B has a temperature accuracy of ±2°C from -25°C to 100°C and ±3°C over -55°C to 125°C.
- What is the resolution of the LM75B temperature readings? The LM75B provides 9-bit digital temperature readings with a resolution of 0.5°C per LSB.
- How does the LM75B consume power in shutdown mode? In shutdown mode, the LM75B consumes 4 μA at +VS = 3 V and 6 μA at +VS = 5 V.
- Can the O.S. output polarity be programmed? Yes, the O.S. output polarity can be set to either active low or active high via the configuration register.
- What is the operating temperature range of the LM75B? The operating temperature range of the LM75B is from -55°C to 125°C.
- What interface does the LM75B use for communication? The LM75B uses an I2C interface for communication.
- How long does it take for the LM75B to convert temperature readings? The temperature conversion time for the LM75B is typically 100 ms.
- Is the LM75B suitable for industrial applications? Yes, the LM75B is suitable for industrial applications due to its high accuracy and reliability.
- Can the LM75B be used in automotive systems? Yes, the LM75B can be used in automotive systems for temperature sensing.
- What is the package type of the LM75BIMMX-3/NOPB? The LM75BIMMX-3/NOPB comes in a VSSOP-8 package.
