TC670

The TC670 is an integrated fan speed sensor that predicts and/or detects fan failure, preventing thermal damage to systems with cooling fans. When the fan speed falls below a user specified level, the TC670 asserts an ALERT signal. With this design, a critical minimum fan speed is determined by the user. The fan alert level is then set with a resistor divider on the THRESHOLD pin of the TC670. When the minimum fan speed is reached, the ALERT pin changes from a digital HIGH to LOW. This failure detection works with all linear controlled 2-wire fans. The TC670 eliminates the need for 3-wire fan solutions.
A CLEAR option can be used to reset the ALERT signal, allowing the flexibility of connecting the ALERT output of the TC670 with other Alert/Fault interrupts in the system. This feature can be implemented so that false fan fault conditions do not initiate system shutdown. The TC670 is specified to operate over the full industrial temperature range of -40°C to 85°C. The TC670 is offered in a SOT23-6 pin package and consumes 90uA (typ) during operation. The space saving package and low power consumption make this device an ideal choice for systems requiring fan speed monitoring. The TC670 is an integrated fan speed sensor that predicts and/or detects fan failure, preventing thermal damage to systems with cooling fans. When the fan speed falls below a user specified level, the TC670 asserts an ALERT signal. The TC670 is a predictive fan failure detector that asserts a signal whenever the fan's RPM falls below a user-programmable RPM level.

产品特性
  • Fan Wear-out Detection for 2-Wire Linear Controlled Fans
  • Replacement System for 3-Wire Fans
  • Fan Alert Signal when Fan Speed is below Programmed Threshold
  • CLEAR Capability for Eliminating False Alarm
  • Low Operating Current, 90uA (typ)
  • VDD Range 3.0V to 5.5V
技术参数
aspxParamName aspxParamValue aspxParamValue
Device Description Predictive Fan Fault Detector Predictive Fan Fault Detector
Typical Accuracy (°C) N/A N/A
Predictive Fan Fault yes yes
Max. Supply Current (µA) 150 150
Max. Accuracy @ 25°C (°C) N/A N/A
Fan Sense Yes Yes
High/Low PWM Freq N/A N/A
Fan Speed Table N/A N/A
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
TC670 DatasheetData Sheets02/05/2013246KB
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
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
TC670ECHTR6SOT-23-40C to +85CT/R1.321.101.000.970.96
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器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC670ECHTR0.0170000.0466676SOT-23-Matte Tine3
TC670 Datasheet TC670
TC670 Datasheet TC670
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
Analog & Interface Product Selector Guide ENC624J600