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ManufacturerMicrochip
SeriesTC642

The TC642 is a switch mode fan speed controller for use with brushless DC motors

Datasheets

  • Download » Datasheet PDF, 388 Kb, File published: Feb 5, 2013
    TC642 Datasheet
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    TC642
    PWM Fan Speed Controller with FanSenseв„ў 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 FanSenseв„ў 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 ...

Prices

Status

TC642COATC642COA713TC642CPATC642EOATC642EOA713TC642EUATC642EUA713TC642VOATC642VOA713TC642VPATC642VUATC642VUA713
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

Parametrics

TC642COATC642COA713TC642CPATC642EOATC642EOA713TC642EUATC642EUA713TC642VOATC642VOA713TC642VPATC642VUATC642VUA713
Auto shutdownNoNoNoNoNoNoNoNoNoNoNoNo
DescriptionFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan Manager
External Temp InputYesYesYesYesYesYesYesYesYesYesYesYes
Fan Speed TableNoNoNoNoNoNoNoNoNoNoNoNo
FanSense fan monitorYesYesYesYesYesYesYesYesYesYesYesYes
High/Low PWM FreqLowLowLowLowLowLowLowLowLowLowLowLow
Integrated temp sensorNoNoNoNoNoNoNoNoNoNoNoNo
Max. Accuracy @ 25°, °Depends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistor
Max. Supply Current, µA100010001000100010001000100010001000100010001000
Operating Temperature Range, °C0 to +700 to +700 to +70-40 to +85-40 to +85-40 to +85-40 to +850 to +850 to +850 to +850 to +850 to +85
Over temp alertYesYesYesYesYesYesYesYesYesYesYesYes
Predictive fan fault detection/read/RPMNoNoNoNoNoNoNoNoNoNoNoNo
SMBus compatible interfaceNoNoNoNoNoNoNoNoNoNoNoNo
Temp. Range, °-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85-40 - +85
Typical Accuracy, °Depends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistorDepends on external thermistor
Vcc Range, V+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5+3.0 - +5.5

Eco Plan

TC642COATC642COA713TC642CPATC642EOATC642EOA713TC642EUATC642EUA713TC642VOATC642VOA713TC642VPATC642VUATC642VUA713
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Moldel Line

Series: TC642 (12)

Manufacturer's Classification

  • Thermal Management > Fan Controllers > Open Loop Fan Controllers and Fault Detectors

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