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Datasheet Microchip TC670ECHTR

ManufacturerMicrochip
SeriesTC670
Part NumberTC670ECHTR

The TC670 is an integrated fan speed sensor that predicts and/or detects fan failure, preventing thermal damage to systems with cooling fans

Datasheets

  • Download » Datasheet, PDF, 253 Kb, 02-05-2013
    TC670 Datasheet
    Docket ↓
    TC670
    Tiny Predictive Fan Failure Detector
    Features General Description Fan Wear-Out Detection for 2-Wire
    Linear-Controlled Fans Replacement System for 3-Wire Fans Fan Alert Signal when Fan Speed is below
    Programmed Threshold CLEAR Capability for Eliminating False Alarm Low Operating Current, 90 ВµA (typ.) VDD Range 3.0V to 5.5V Available in a 6-Pin SOT-23 Package The TC670 is an integrated fan speed sensor that
    predicts and/or detects fan failure, preventing thermal
    damage to systems with cooling fans. When the fan
    speed falls below a user-specified level, the TC670
    asserts an ALERT signal. With this design, a critical
    minimum fan speed is determined by the user. The fan
    alert level is then set with a resistor divider on the
    THRESHOLD pin (Pin 1) of the TC670. When the
    minimum fan speed is reached, the ALERT pin (Pin 5)
    changes from a digital high to low. This failure detection
    works with all linear-controlled 2-wire fans. The TC670
    eliminates the need for 3-wire fan solutions. Applications A CLEAR option can be used to reset the ALERT signal, allowing the flexibility of connecting the ALERT
    output of the TC670 with other ALERT/FAULT interrupts in the system. This feature can be implemented
    so that false fan fault conditions do not initiate system
    shutdown. Protection for Linear-Controlled Fans
    Power Supplies
    Industrial Equipment
    PCs and Notebooks
    Data Storage ...

Prices

Status

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

Packaging

PackageSOT-23
Pins6

Parametrics

Auto shutdownNo
DescriptionPredictive Fan Fault Detector
External Temp InputNo
Fan Speed TableN/A
FanSense fan monitorYes
High/Low PWM FreqN/A
Integrated temp sensorNo
Max. Accuracy @ 25°N/A °
Max. Supply Current150 µA
Operating Temperature Range-40 to +85 °C
Over temp alertNo
Predictive fan fault detection/read/RPMYes
SMBus compatible interfaceNo
Temp. Range-40 - +85 °
Typical AccuracyN/A °
Vcc Range+3.0 - +5.5 V

Eco Plan

RoHSCompliant

Moldel Line

Series: TC670 (1)
  • TC670ECHTR

Manufacturer's Classification

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