The EMC2101 is a fan controller with temperature monitoring, and it will take care of all of that for you. Programmable PWM output and tachometer input, with both internal and external temperature sensing, with a 1°C accuracy, it's a perfect friend for any 3 or 4-pin PC fan you may find.

Four pin PC fans have a power and ground pin (those are red and black) and then two more pins. One of those extra pins, the PWM pin, allows you to set the speed of the fan. The last TACH pin is for a tachometer output that allows the EMC2101 to monitor the speed of the fan to make sure it's working as expected. Instead of using a PWM output and counter input on your microcontroller, this chip will take care of that all for you, all over every-day I2C.

In addition to allowing you to control a fan, the EMC2101 includes an internal temperature sensor, as well as connections for an external temperature sensing diode. If you use an external temperature sensor, you can even configure a lookup table (LUT) that allows you to set different fan speeds depending on the temperature, and the EMC2101 will automatically adjust the speed depending on the temperature.

This neat little chip can easily be used to help provide cooling or ventilation to your next project. You might even be able to use it to help quiet down an existing project or hack a noisy piece of electronics that has a loud fan. By allowing you to run a fan at slower speeds when cooling needs are moderate, the EMC2101 can help ease the vibration noise caused by fans running at full speed.

Delivered to you on our custom Stemma QT form factor PCB, EMC2101 breakout is ready to help you integrate a fan into your project by making it easy to use with a range of devices. A voltage regulator and 5V tolerant pins allow you to use it with 3.3V or 5V microcontrollers or single-board computers. The included SparkFun qwiic compatible STEMMA QT connectors for the I2C bus allow you to make easy solderless connections to your controlling device, and the standard headers make breadboard prototyping easy.

描述
EMC2101是一个具有温度监测功能的风扇控制器，它将为您处理所有这些问题。可编程PWM输出和转速表输入，具有内部和外部温度感应，精度为1°C，它是您可能找到的任何3或4引脚PC风扇的完美朋友。

四脚PC风扇有电源和接地引脚(那些是红色和黑色)，然后两个更多的引脚。其中一个额外的引脚，PWM引脚，允许您设置风扇的速度。最后一个TACH引脚用于转速表输出，允许EMC2101监控风扇的速度，以确保其按预期工作。而不是在你的微控制器上使用PWM输出和计数器输入，这个芯片将为你照顾这一切，所有的日常I2C。

除了允许您控制风扇外，EMC2101还包括一个内部温度传感器，以及外部温度传感二极管的连接。如果您使用外部温度传感器，您甚至可以配置查找表(LUT)，允许您根据温度设置不同的风扇速度，EMC2101将根据温度自动调整速度。

这个整洁的小芯片可以很容易地为你的下一个项目提供冷却或通风。你甚至可以用它来帮助一个现有的项目安静下来，或者黑掉一个有大风扇的嘈杂的电子产品。EMC2101允许在散热需求适中的情况下，降低风扇的转速，减轻风扇全速运行时产生的振动噪音。

EMC2101 breakout通过我们定制的Stemma QT外形尺寸PCB交付给您，可以帮助您将风扇集成到您的项目中，使其易于与各种设备一起使用。电压调节器和5V容限引脚允许您将其与3.3V或5V微控制器或单板计算机一起使用。包括SparkFun qwiic兼容STEMMA QT连接器的I2C总线允许您轻松地无焊连接到您的控制设备，标准头使breadboard原型设计容易。