LM64数据手册TI中文资料规格书

描述 Description

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.

特性 Features

·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 to50°C0°C to 85°C
·Diode Temp120°C to 140°C 25°C to140°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)
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