LM92
- Window Comparison Simplifies Design of ACPI-Compatible Temperature Monitoring and Control
- Serial Bus Interface
- Separate Open-Drain Outputs for Interrupt and Critical Temperature Shutdown
- Shutdown Mode to Minimize Power Consumption
- Up to Four LM92s can be Connected to a Single Bus
- 12-Bit + Sign Output
- Operation up to 150°C
Key Specifications
- Supply Voltage 2.7V to 5.5V
- Supply Current operating 350 μA (typ) 625 μA (max) shutdown 5 μA (typ)
- Temperature Accuracy
- 30°C, ±0.33°C (max)
- 10°C to 50°C, ±0.50°C (max)
- −10°C to 85°C, ±1.0°C (max)
- 125°C, ±1.25°C (max)
- −25°C to 150°C, ±1.5°C (max)
- Linearity ±0.5°C (max)
- Resolution 0.0625°C
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The LM92 is a digital temperature sensor and thermal window comparator with an I2C Serial Bus interface and an accuracy of ±0.33°C. The window-comparator architecture of the LM92 eases the design of temperature control systems. The open-drain Interrupt (INT) output becomes active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm (T_CRIT_A) output becomes active when the temperature exceeds a programmable critical limit. The INT output can operate in either a comparator or event mode, while the T_CRIT_A output operates in comparator mode only.
The host can program both the upper and lower limits of the window as well as the critical temperature limit. Programmable Hysteresis as well as a fault queue are available to minimize false tripping. Two pins (A0, A1) are available for address selection. The sensor powers up with default thresholds of 2°C THYST, 10°C TLOW, 64°C THIGH, and 80°C T_CRIT.
The LM92's 2.7V to 5.5V supply voltage range, Serial Bus interface, 12-bit + sign output, and full-scale range of over 128°C make it ideal for a wide range of applications. These include thermal management and protection applications in personal computers, electronic test equipment, office electronics, automotive, medical and HVAC applications.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | 12-Bit + Temp Sensor & Thermal Window Comparator w/2-Wire Interface 数据表 (Rev. D) | 2013-3-22 | |||
| 应用手册 | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013-5-6 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LM92SW-LINUX — 用于 LM92 的 Linux 驱动程序
Linux 驱动程序支持 LM92 温度传感器。Linux 驱动程序支持通过 I2C 总线和接口与硬件监控子系统进行通信。
Linux 主线状态在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用
- lm92
与该器件关联的文件为：
- drivers/hwmon/lm92.c
- Documentation/devicetree/bindings/i2c/trivial-devices.txt
- Documentation/hwmon/lm92
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |