Overview
The LM75BTP,147 is a digital temperature sensor and thermal watchdog produced by NXP USA Inc. This component utilizes an on-chip band gap temperature sensor and Sigma-Delta A-to-D conversion technique to provide accurate temperature measurements. It is designed for a wide range of applications requiring precise temperature monitoring and overtemperature detection.
Key Specifications
| Attribute | Value |
|---|---|
| Output Type | Digital |
| Supply Voltage | 2.8V to 5.5V |
| Operating Temperature Range | -55°C to +125°C (-67°F to +257°F) |
| Output Current - Max | 10mA |
| Mounting Method | Surface Mount |
| Package Type | HWSON8 |
| Interface | I2C/SMBus, 2-wire |
| Temperature Resolution | 0.125°C |
| Accuracy | ±1°C (±2°C) |
| RoHS Status | ROHS3 Compliant |
Key Features
- Precision Temperature Measurement: The LM75BTP,147 offers high temperature resolution of 0.125°C, making it suitable for applications requiring precise thermal monitoring.
- Overtemperature Detection: The device includes an open-drain output (OS) that becomes active when the temperature exceeds the programmed limits, available in either OS comparator mode or OS interrupt mode.
- Configurable Operation Modes: The device can be set in normal mode for continuous temperature monitoring or in shutdown mode to minimize power consumption, drawing approximately 1.0 μA.
- I2C/SMBus Interface: Supports a 2-wire serial interface, allowing for easy communication with a controller and the ability to connect up to eight devices on the same bus without address conflict.
- Programmable Set-Points and Fault Queue: The device allows for programmable overtemperature shutdown and hysteresis limits, as well as a configurable fault queue to define the number of consecutive faults required to activate the OS output.
Applications
- Industrial Automation: Used in industrial control systems to monitor and control temperatures in various industrial processes.
- Consumer Electronics: Employed in consumer devices such as laptops, smartphones, and other electronic gadgets to monitor and manage thermal conditions.
- Aerospace and Defense: Suitable for applications in harsh environments due to its wide operating temperature range and high accuracy.
- Automotive Systems: Used in automotive systems for temperature monitoring in engines, batteries, and other critical components.
- Medical Devices: Applied in medical equipment where precise temperature control is crucial, such as in patient monitoring systems and medical imaging devices.
Q & A
- What is the operating temperature range of the LM75BTP,147?
The operating temperature range is -55°C to +125°C (-67°F to +257°F).
- What is the supply voltage range for the LM75BTP,147?
The supply voltage range is 2.8V to 5.5V.
- What type of interface does the LM75BTP,147 use?
The device uses an I2C/SMBus, 2-wire interface.
- How many devices can be connected on the same bus without address conflict?
Up to eight devices can be connected on the same bus without address conflict.
- What is the temperature resolution of the LM75BTP,147?
The temperature resolution is 0.125°C.
- Can the LM75BTP,147 be configured for different operation modes?
Yes, it can be set in normal mode or shutdown mode to minimize power consumption.
- What is the purpose of the OS output in the LM75BTP,147?
The OS output becomes active when the temperature exceeds the programmed limits and can operate in either OS comparator mode or OS interrupt mode).
- Is the LM75BTP,147 RoHS compliant?
Yes, the LM75BTP,147 is ROHS3 compliant).
- What is the package type of the LM75BTP,147?
The package type is HWSON8).
- How does the device handle power consumption in shutdown mode?
In shutdown mode, the device draws a small current of approximately 1.0 μA and minimizes power dissipation).
