Datasheet Microchip TC648EUA The TC648 is a switch mode fan speed controller for use with brushless DC motors Datasheets- Download » Datasheet, PDF, 357 Kb, 02-05-2013
TC648 Datasheet Docket ↓TC648 Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert Features 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 TC648 Supply Voltage -Supports any Fan Voltage Over-temperature Fault Detection Automatic Shutdown Mode for “Green” Systems Supports Low Cost NTC/PTC Thermistors Space Saving 8-Pin MSOP Package Applications Power Supplies Computers Portable Computers Telecom Equipment UPSs, Power Amps General Purpose Fan Speed Control Available Tools Fan Controller Demonstration Board (TC642DEMO) Fan Controller Evaluation Kit (TC642EV) Package Types SOIC/PDIP/MSOP VIN 1 CF 2 VAS 3 GND 4 TC648 8 VDD 7 VOUT 6 OTF 5 NC General Description The TC648 is a switch mode, fan speed controller for use with brushless DC fans. Temperature proportional speed control is accomplished using pulse width modulation (PWM). A thermistor (or other voltage output temperature sensor) connected to the VIN input furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC648 can be configured to operate in either auto-shutdown or minimum speed mode. In auto-shutdown mode, fan ...
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StatusLifecycle Status | Production (Appropriate for new designs but newer alternatives may exist) |
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PackagingParametricsAuto shutdown | Yes |
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Description | Fan Manager |
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External Temp Input | Yes |
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Fan Speed Table | No |
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FanSense fan monitor | No |
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High/Low PWM Freq | Low |
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Integrated temp sensor | No |
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Max. Accuracy @ 25° | Depends on external thermistor ° |
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Max. Supply Current | 1000 µA |
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Operating Temperature Range | -40 to +85 °C |
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Over temp alert | Yes |
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Predictive fan fault detection/read/RPM | No |
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SMBus compatible interface | No |
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Temp. Range | -40 - +85 ° |
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Typical Accuracy | Depends on external thermistor ° |
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Vcc Range | +3.0 - +5.5 V |
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Eco PlanMoldel LineSeries: TC648 (9) Manufacturer's Classification- Thermal Management > Fan Controllers > Open Loop Fan Controllers and Fault Detectors
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