TC665

The TC665 is a single PWM mode fan speed controller with FanSense™ TM technology for use with brush-less DC motors. The device allows temperature proportional speed control and therefore accomplishes lower acoustic fan noise and longer fan life. The TC665 reads the voltage provided by an external ther-mistor (or voltage output temperature sensor) and adjust sa 30% to 100% PWM duty cycle output to the fan with respect to the input temperature voltage. The PWM duty cycle can also be programmed via SMBus to allow fan speed control without the need of an external thermistor.

In normal fan operation, pulse trains are present at the SENSE pin. These pulses are used to calculate the fan RPM. The fan RPM data is used to detect a worn out, stalled, open or unconnected fan. An RPM level below the user-programmable threshold causes the TC665 to assert a logic low alert signal (FAULT). Thedefault value is 500RPM. The TC665 consumes only 0.3mA during operation and can also enter a low-power shutdown mode by setting the appropriate bit in the configuration register.

产品特性
  • Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
  • FanSense™ Protects Against Fan Failure
  • Over-Temperature Detection
  • 2-wire SMBus Compatible Interface
  • 3.0V to 5.5V Supply Range
  • Fan Voltage Independent of Supply Voltage Supports Any Fan Voltage
  • Supports Any Fan Voltage
  • Supports Low Cost NTC/PTC Thermistors
技术参数
aspxParamName aspxParamValue aspxParamValue
Device Description Programmable Single Fan Manager Programmable Single Fan Manager
Typical Accuracy (°C) Depends on external thermistor Depends on external thermistor
Over Temp Alert yes yes
SM Bus yes yes
Predictive Fan Fault yes yes
Max. Supply Current (µA) 320 320
Max. Accuracy @ 25°C (°C) Depends on external thermistor Depends on external thermistor
Fan Sense Yes Yes
External Temp Input Yes Yes
High/Low PWM Freq Low Low
Temp Range (°C) -40 to +85 -40 to +85
Vcc Range (V) +3.0 to +5.5 +3.0 to +5.5
文档资料
TC664/65 DatasheetData Sheets02/05/2013521KB
Analog & Interface Guide (Volume 2)Brochures10/11/20051067KB
Quick Guide to Microchip Development ToolsBrochures10/15/201411223KB
Fan Control Function Pack Design GuideProduct Line Documents08/23/2006162KB
Fan Management Solutions Product OverviewProduct Line Documents08/23/200687KB
Fan Speed Controller and Fan Fault Detector FamilyProduct Line Documents05/13/2003245KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
TC665EUN10MSOP-40C to +85CTUBE1.831.531.391.341.33
TC665EUNTR10MSOP-40C to +85CT/R1.831.531.391.341.33
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TC651Fan Manager1-40 - +125$1.08
TC652Fan Manager1-40 - +125$1.36
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TC654Dual SMBus Fan ManagerDepends on external thermistor-40 - +85$1.43
TC655Dual SMBus Fan ManagerDepends on external thermistor-40 - +85$1.53
TC664Single SMBus Fan ManagerDepends on external thermistor-40 - +85$1.27
TC665Single SMBus Fan ManagerDepends on external thermistor-40 - +85$1.31
TC670Predictive Fan Fault DetectorN/A-40 - +85$0.94
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC665EUN0.0232000.06000010MSOP3x3mmMatte Tine3
TC665EUNTR0.0232000.20000010MSOP3x3mmMatte Tine3
TC664/65 Datasheet TC665
TC664/65 Datasheet TC665
Analog & Interface Guide (Volume 2) MCP23S08
Quick Guide to Microchip Development Tools ENC28J60
Fan Control Function Pack Design Guide TC670
Fan Management Solutions Product Overview TC670
Fan Speed Controller and Fan Fault Detector Family TC665
Analog & Interface Product Selector Guide ENC624J600