| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 6 Pin |
| Supply Voltage (DC) | 3.00 V (min) |
| Case/Package | SOT-23A-6 |
| Number of Outputs | 1 Output |
| Input Voltage (DC) | 6.30 V |
| Supply Current | 150 µA |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR), Cut Tape (CT) |
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
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