Datasheet Microchip TC642COA713 The TC642 is a switch mode fan speed controller for use with brushless DC motors Datasheets- Download » Datasheet, PDF, 388 Kb, 02-05-2013
TC642 Datasheet
Docket ↓TC642
PWM Fan Speed Controller with FanSenseâ„¢ Technology
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 TC642
Supply Voltage
-Supports any Fan Voltage FanSenseâ„¢ Fault Detection Circuits Protect
Against Fan Failure and Aid System Testing Shutdown Mode for "Green" Systems Supports Low Cost NTC/PTC Thermistors Space Saving 8-Pin MSOP Package Over-temperature Indication Applications Power Supplies
Personal Computers
File Servers
Telecom Equipment
UPSs, Power Amps, etc.
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 VMIN
GND 8 VDD 7 VOUT 3 6 FAULT 4 5 SENSE TC642 General Description
The TC642 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. Minimum fan
speed is set by a simple resistor divider on the VMIN
input. An integrated Start-up Timer ensures reliable ...
PricesStatus| Lifecycle Status | Production (Appropriate for new designs but newer alternatives may exist) |
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PackagingParametrics| Auto shutdown | No |
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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 | Yes |
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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 | 0 to +70 °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: TC642 (12) Manufacturer's Classification- Thermal Management > Fan Controllers > Open Loop Fan Controllers and Fault Detectors
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