TC647

The TC647 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. Minimum fan speed is set by a simple resistor divider on the VMIN input. An integrated Start-up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. A logic low applied to VMIN, Pin 3, causes fan shutdown. The TC647 also features Microchip Technology's proprietary FanSense™ ™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE, Pin 5, indicating normal operation. A Missing-pulse Detector monitors this pin during normal fan operation. A stalled, open, or unconnected fan causes the TC647 to trigger its start-up timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. The TC647 is available in a standard 8-Pin PDIP, MSOP and SOIC packages. Commercial and industrial temperature ranges are available in both package options.

产品特性
  • Temperature Proportional
  • Fan Speed for Acoustic Control and Longer Fan Life
  • Efficient PWM Fan Drive
  • 3.0V to 5.5V Supply Range
  • Fan Voltage Independent of TC647 Supply Voltage Supports Any Fan Voltage!
  • Supports Any Fan Voltage!
  • FanSense™Fault Detection Circuits Protect Against Fan Failure and Aid
  • System Testing
  • Shutdown Mode for "Green" Systems
  • Supports Low Cost NTC/PTC Thermistors
技术参数
Parameter Name Value Value
Device Description Fan Manager Fan Manager
Typical Accuracy (°C) Depends on external thermistor Depends on external thermistor
Max. Supply Current (µA) 1000 1000
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
TC647 DatasheetData Sheets02/05/2013368KB
AN770 - Linear Voltage Fan Speed Control Using Microchip?s TC64x Family (TC642, TC646, TC648)AppNote07/27/2004203KB
AN771 - Suppressing Acoustic Noise in PWM Fan Speed Control SystemsAppNote07/27/2004276KB
TB063 - An Integrated Fan Speed Control Solution Can Lower System Costs, Reduce Acoustic Noise, Power Consumption and Enhance System ReliabilityAppNote02/24/2003204KB
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
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User's GuideUser Guides01/24/20061367KB
TC64X/TC64XB Fan Control Evaluation Board User's GuideUser Guides11/24/2003360KB
Thermistor Value Calculator with Solver for the TC64x FamilyUser Guides11/24/2003130KB
Thermistor Value Calculator without Solver for the TC64x FamilyUser Guides11/24/2003107KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
TC647EOA8SOIC-40C to +85CTUBE1.401.161.061.021.01
TC647EOATR8SOIC-40C to +85CT/R1.401.161.061.021.01
TC647EUA8MSOP-40C to +85CTUBE1.301.090.990.950.94
TC647EUATR8MSOP-40C to +85CT/R1.301.090.990.950.94
TC647VOA8SOIC0C to +85CTUBE1.321.101.000.970.96
TC647VOATR8SOIC0C to +85CT/R1.321.101.000.970.96
TC647VPA8PDIP0C to +85CTUBE1.351.131.020.990.98
TC647VUA8MSOP0C to +85CTUBE**********
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器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC647VPA0.4867000.9000008PDIP.300inMatte Tine3
TC647BEPA0.4867000.9000008PDIP.300inMatte Tine3
TC647EOA0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
TC647EOATR0.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
TC647BEOA0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
TC647BEOATR0.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
TC647VOATR0.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
TC647VOA0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
TC647VUA0.0256000.0700008MSOP3x3mmMatte Tine3
TC647VUATR0.0256000.2156008MSOP3x3mmMatte Tine3
TC647BEUA0.0256000.0700008MSOP3x3mmMatte Tine3
TC647BEUATR0.0256000.2156008MSOP3x3mmMatte Tine3
TC647EUA0.0256000.0700008MSOP3x3mmMatte Tine3
TC647EUATR0.0256000.2156008MSOP3x3mmMatte Tine3
TC647 Datasheet TC647
TC647 Datasheet TC647
AN770 TC649B
AN771 TC649B
TB063 TC649B
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
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User's Guide SOIC8EV
TC64X/TC64XB Fan Control Evaluation Board User's Guide TC649B