Overview
The LM75BIMX-3 is a digital temperature sensor and thermal watchdog manufactured by National Semiconductor. It is designed for precise temperature monitoring and control in various electronic systems. This device features an I²C interface, making it easy to integrate into digital systems. The LM75BIMX-3 is widely used in applications requiring thermal management, such as consumer electronics, industrial automation, and automotive systems. Its high accuracy, low power consumption, and programmable temperature limits make it a competitive choice in the market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Accuracy | ±0.5 | °C | Over full temperature range |
| Supply Voltage | 3.0 to 5.5 | V | |
| Operating Current | 250 | µA | Typical |
| Shutdown Current | 4 | µA | Typical |
| Temperature Range | -55 to +125 | °C | |
| Interface | I²C | 2-wire | |
| Package | SOP-8 | ||
| Address Pins | 3 | Supports up to 8 devices on the same bus | |
| Output | Open-drain OS | Interrupt or comparator mode |
Key Features
- High accuracy of ±0.5°C for reliable temperature monitoring.
- Low power consumption with 250 µA operating current and 4 µA shutdown current.
- Programmable temperature limits with hysteresis for precise thermal management.
- I²C interface for easy integration into digital systems.
- Open-drain OS output for interrupt or comparator functionality.
- Wide operating temperature range from -55°C to +125°C.
Applications
The LM75BIMX-3 is suitable for a variety of applications, including:
- Consumer Electronics: Thermal management in devices such as laptops, smartphones, and gaming consoles.
- Industrial Automation: Temperature monitoring and control in machinery and equipment.
- Automotive Systems: Ensuring optimal operating temperatures in vehicle electronics.
- Medical Devices: Precise temperature sensing in diagnostic and therapeutic equipment.
Q & A
1. What is the accuracy of the LM75BIMX-3?
The LM75BIMX-3 has an accuracy of ±0.5°C over its full temperature range.
2. What is the operating voltage range of the LM75BIMX-3?
The device operates at a supply voltage range of 3.0V to 5.5V.
3. How many devices can be connected on the same I²C bus?
Up to 8 devices can be connected on the same I²C bus using the address pins.
4. What is the typical operating current of the LM75BIMX-3?
The typical operating current is 250 µA.
5. Can the LM75BIMX-3 operate in extreme temperatures?
Yes, it can operate in temperatures ranging from -55°C to +125°C.
6. What is the function of the OS output?
The OS output can operate in either interrupt or comparator mode to indicate temperature threshold violations.
7. Is the LM75BIMX-3 suitable for automotive applications?
Yes, it is suitable for automotive systems requiring thermal management.
8. What is the package type of the LM75BIMX-3?
It comes in an SOP-8 package.
9. How does the LM75BIMX-3 reduce power consumption?
It features a shutdown mode with a typical current of 4 µA.
10. Can the temperature limits be programmed?
Yes, the temperature limits and hysteresis can be programmed via the I²C interface.
