LM64是TI公司的一款监控和??风扇控制产品，LM64是具有 PWM 风扇控制和 5 GPIO 的 ±1°C 远程二极管温度传感器，本页介绍了LM64的产品说明、应用、特性等，并给出了与LM64相关的TI元器件型号供参考。
LM64 - 具有 PWM 风扇控制和 5 GPIO 的 ±1°C 远程二极管温度传感器 - 监控和??风扇控制 - 其他传感器信号调节器 - TI公司（Texas Instruments，德州仪器）
The LM64 is a remote diode temperature sensor with PWM fan control. The LM64 accurately measures its own temperature and that of a remote diode. The LM64 remote temperature accuracy is factory trimmed for a MMBT3904 diode-connected transistor with a 16°C offset for high temperatures. TACTUAL DIODE JUNCTION = TLM64 + 16°C
The LM64 features a PWM, open-drain, fan control output, 5 GPIO (General Purpose Input/Output) and 5 GPD (General Purpose Default) pins. The 8-step Lookup Table allows for a non-linear fan speed vs. temperature transfer function often used to quiet acoustic fan noise.
- Accurately Senses Remote and Local Diode Temperatures
- Integrated PWM Fan Speed Control Output
- Programmable 8-step Lookup Table for Quieting Fans
- ALERT and T_Crit Open-drain Outputs
- Tachometer Input for Measuring Fan RPM
- 10 bit Plus Sign Remote Diode Temperature Data Format, with 0.125°C Resolution
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- 5 General Purpose Input/Output pins
- 5 General Purpose Default input pins
- 24-pin WQFN Package
Key Specifications
- Remote Diode Temperature Accuracy (includes quantization error)
- Ambient Temp30°C to 50°C0°C to 85°C
- Diode Temp120°C to 140°C 25°C to 140°C
- Max Error±1.0°C (max)±3.0°C (max)
- Local Temp Accuracy (includes quantization error)
- Ambient Temp 25°C to 125°C
- Max Error ±3.0°C (max)
- Power Supply Requirements
- Supply DC Voltage 3.0 V to 3.6 V
- Supply DC Current 1.1 mA (typ)
