Datasheet Microchip TC670ECHTR 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 ...
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 | Predictive Fan Fault Detector |
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| External Temp Input | No |
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| Fan Speed Table | N/A |
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| FanSense fan monitor | Yes |
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| High/Low PWM Freq | N/A |
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| Integrated temp sensor | No |
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| Max. Accuracy @ 25° | N/A ° |
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| Max. Supply Current | 150 µA |
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| Operating Temperature Range | -40 to +85 °C |
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| Over temp alert | No |
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| Predictive fan fault detection/read/RPM | Yes |
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| SMBus compatible interface | No |
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| Temp. Range | -40 - +85 ° |
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| Typical Accuracy | N/A ° |
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| Vcc Range | +3.0 - +5.5 V |
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Eco PlanMoldel LineSeries: TC670 (1) Manufacturer's Classification- Thermal Management > Fan Controllers > Open Loop Fan Controllers and Fault Detectors
Related datasheets: - Datasheet Microchip TC670
- Datasheet PMR670UPE - NXP MOSFET, P CH, DUAL, 20 V, 480 mA, SOT416
- Datasheet PMDT670UPE - NXP MOSFET, P CH, DUAL, 20 V, 550 mA, SOT666
- Datasheet PMZB670UPE - NXP MOSFET, P-CH, 20 V, SOT883B
- Datasheet Texas Instruments CD74HC670
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