CXFA3155 contains 3 precise digital thermometers, 3/4 fan controllers, fan failure detection. The thermometers report the temperature of 2 remote sensors and 1 local sensor. The remote sensors are dio

发布时间:2020-04-06 09:43:38 浏览次数:697 作者:嘉泰姆
摘要:CXFA3155 contains 3 precise digital thermometers, 3/4 fan controllers, fan failure detection. The thermometers report the temperature of 2 remote sensors and 1 local sensor. The remote sensors are dio

目录

1.产品概述       2.产品特点     OgM嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)</span>OgM嘉泰姆

5.产品封装       6.电路原理图</strong>  OgM嘉泰姆

7.相关产品OgM嘉泰姆

   产品概述 返回TOPOgM嘉泰姆


The CXFA3155 contains 3 precise digital thermometers, 3/4 fan controllers, fan failure detection. The thermometers report the temperature of 2 remote sensors and 1 local sensor. The remote sensors are diode-connected transistors typically a low-cost, easily mounted 2N3904 NPN type or the diode built-in in CPU. Remote accuracy is ±1°C for multiple transistor manufacturer. Local accuracy is ±3°C. The CXFA3155 also support offset adjust function via SMBus to fix the error due to different CPU diode or parasitic resistors. The 2-wire serial interface accepts standard System Management Bus (SMBusTM) Write Byte, Read Byte, Send Byte, and Receive Byte commands. The SMBus address is 70h 72h for write and 7173hh for read for CXFA3155.For CXFA3155, ADD0 pin selects 3 different SMBus addresses. (see “ SMBus Digital Interface” section) CXFA3155 contains 3/4 fan controllers which perform closed-loop and open-loop control. CXFA3155 etermines the current fan speed based on the FG inputs and an externally supplied 32.768kHz clock. The driving ability is 5mA. CXFA3155 also provides ALERT for fan fail and out of control event.

   产品特点 返回TOPOgM嘉泰姆


„ Measures Two Remote and One Local Temperatures OgM嘉泰姆

 „ Adjustable Offset for Each Sensor via SMBus OgM嘉泰姆

„ Accuracy: Remote ±1°C (+20°C to +80°C) ±3°C (-10°C to +120°C) „ +4.5V to +5.5V Supply Range OgM嘉泰姆

„ Alert Signal for Diode Fault, Fan Fail, and Fan Out of Control OgM嘉泰姆

„ Supports SMBus Alert Response OgM嘉泰姆

„ Fan Drivers Using Linear Control Algorithm OgM嘉泰姆

„ Closed Loop Speed Control and programmable 8 Bits Open Loop Voltage Control for Fan OgM嘉泰姆

„ Wide speed control range for Fan, Accuracy within 2%, when FANx_SET_CNT > 50 OgM嘉泰姆

„ Internal Current-limit and Over-temperature Protection for the Fan Controllers OgM嘉泰姆

„ Build-In Inverters for Driving Crystal OgM嘉泰姆

„ Optional Internal Clock Accuracy ±3% from 20°C to 80°C at 5V VCC „ 20-Pin TSSOP PackageOgM嘉泰姆

   应用范围 返回TOPOgM嘉泰姆


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   技术规格书(产品PDF) 返回TOP OgM嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持</span>!</span>
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 QQ截图20160419174301.jpgOgM嘉泰姆

产品封装图&nbsp;返回TOPOgM嘉泰姆


image.pngOgM嘉泰姆

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