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ManufacturerMicrochip
SeriesTC646

The TC646 is a switch mode fan speed controller for use with brushless DC motors

Datasheets

  • Download » Datasheet PDF, 378 Kb, File published: Feb 5, 2013
    TC646 Datasheet
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    DTC646
    PWM Fan Speed Controller with Auto-Shutdown
    and FanSense™ 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 TC646
    Supply 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 Space Saving 8-Pin MSOP Package Over-temperature Indication Applications Power Supplies
    Computers
    File Servers
    Portable Computers
    Telecom Equipment
    UPS, 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
    GND 8 VDD 7 VOUT 3 6 FAULT 4 5 SENSE TC646 General Description
    The TC646 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 TC646 ...

Prices

Status

TC646EOATC646EOA713TC646EUATC646EUA713TC646VOATC646VOA713TC646VPATC646VUATC646VUA713
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)

Packaging

TC646EOATC646EOA713TC646EUATC646EUA713TC646VOATC646VOA713TC646VPATC646VUATC646VUA713
PackageSOICSOICMSOPMSOPSOICSOICPDIPMSOPMSOP
Pins888888888

Parametrics

TC646EOATC646EOA713TC646EUATC646EUA713TC646VOATC646VOA713TC646VPATC646VUATC646VUA713
Auto shutdownYesYesYesYesYesYesYesYesYes
DescriptionFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan ManagerFan Manager
External Temp InputYesYesYesYesYesYesYesYesYes
Fan Speed TableNoNoNoNoNoNoNoNoNo
FanSense fan monitorYesYesYesYesYesYesYesYesYes
High/Low PWM FreqLowLowLowLowLowLowLowLowLow
Integrated temp sensorNoNoNoNoNoNoNoNoNo
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 thermistor
Max. Supply Current, µA100010001000100010001000100010001000
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85-40 to +850 to +850 to +850 to +850 to +850 to +85
Over temp alertYesYesYesYesYesYesYesYesYes
Predictive fan fault detection/read/RPMNoNoNoNoNoNoNoNoNo
SMBus compatible interfaceNoNoNoNoNoNoNoNoNo
Temp. Range, °-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 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

Eco Plan

TC646EOATC646EOA713TC646EUATC646EUA713TC646VOATC646VOA713TC646VPATC646VUATC646VUA713
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Moldel Line

Series: TC646 (9)

Manufacturer's Classification

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

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