LM80
- Temperature Sensing
- 7 Positive Voltage Inputs
- 2 Programmable Fan Speed Monitoring Inputs
- 10 mV LSB and 2.56V Input Range Accepts Outputs From Linear Temperature Sensors Such as the LM50
- Chassis Intrusion Detector Input
- WATCHDOG Comparison of all Monitored Values
- Separate Input to Show Status in Interrupt Status Register of Additional External Temperature Sensors such as the LM56 or LM75
- I2C Serial Bus Interface Compatibility
- Shutdown Mode to Minimize Power Consumption
- Programmable RST_OUT/OS pin: RST_OUT Provides a Reset Output; OS Provides an Interrupt Output Activated by an Overtemperature Shutdown Event
Key Specifications
- Voltage Monitoring Error ±1% (Max)
- Temperature Error (−25°C to +125°C) ±3°C (Max)
- Supply Voltage Range 2.8 to 5.75 V
- Supply Current: Operating 0.2 mA typ
- Supply Current: Shutdown 15 µA typ
- ADC Resolution 8 Bits
- Temperature Resolution 0.5ºC
All trademarks are the property of their respective owners.
The LM80 provides 7 positive voltage inputs, temperature measurement, fan speed measurement, and hardware monitoring on an I2C interface. The LM80 performs WATCHDOG comparisons of all measured values and an open-drain interrupt output becomes active when any values exceed programmed limits. A Chassis Intrusion input is provided to monitor and reset an external circuit designed to latch a chassis intrusion event.
The LM80 is especially suited to interface to both linear and digital temperature sensors. The 10 mV LSB and 2.56 volt input range is ideal for accepting inputs from a linear sensor such as the LM50. The BTI is used as an input from either digital or thermostat sensors such as LM75 and LM56.
The LM80's 2.8V to 5.75V supply voltage range, low supply current, and I2C interface make it ideal for a wide range of applications. These include hardware monitoring and protection applications in personal computers, electronic test equipment, and office electronics.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM80 Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor datasheet (Rev. F) | 2013年 3月 22日 | |
| Application note | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013年 5月 6日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM80SW-LINUX — 適用於 LM80 的 Linux 驅動程式
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
- lm80
- (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| TSSOP (PW) | 24 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點