Low

TC670ECHTR - 

Fan Failure, 3V-5.5V Supply, 124 mV Threshold, Active-Low, Push-Pull, SOT-23-6

TC670ECHTR - Fan Failure, 3V-5.5V Supply, 124 mV Threshold, Active-Low, Push-Pull, SOT-23-6

The actual product may differ from image shown

Manufacturer:
MICROCHIP MICROCHIP
Manufacturer Part No:
TC670ECHTR
Newark Part No.:
92C2504
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The TC670ECHTR is an integrated Fan Speed Sensor predicts or detects fan failure, preventing thermal damage to systems with cooling fans. When the fan speed falls below 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. 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.
  • 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
  • 90µA Typical low operating current

Applications

Automation & Process Control, Portable Devices, Sensing & Instrumentation

Product Information

:
124mV
:
1Monitors
:
3V
:
5.5V
:
Active-Low, Push-Pull
:
SOT-23
:
6Pins
:
-
:
-40°C
:
125°C
:
Cut Tape
:
-
:
-
:
To Be Advised
:
MSL 1 - Unlimited
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