| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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28 pcs
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28 pcs | On Request | 1 | On Request | On Request | 11+ | On Request | On Request |
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The Microchip Technology TC646BEPA is a switch-mode fan speed controller featuring temperature-proportional speed control via pulse width modulation (PWM). It supports a supply voltage range of 3.0V to 5.5V, with fan voltage independent of the supply voltage, allowing it to support any fan voltage.
This device is designed for applications such as personal computers, servers, LCD projectors, and datacom equipment. It incorporates features like FanSense™ fault detection (on TC646B/TC649B) for increased system reliability, automatic shutdown mode for energy efficiency, and fan auto-restart functionality. The integrated start-up timer ensures reliable fan motor startup.
The TC646BEPA operates within an ambient temperature range of -40°C to 85°C. It is housed in a space-saving 8-pin PDIP package, suitable for through-hole mounting.
Key electrical specifications include an output voltage of 4.4V, an output current of 5mA, and a supply current of 400µA. The switching frequency is 30 Hz. The control voltage range for PWM duty cycle is typically 1.20V to 2.60V.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.25 | $2.25 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
3V to 5.5V.
8-PDIP (8-DIP, 0.300", 7.62mm) through-hole package.
-40°C to 85°C.
5 mA.
30 Hz.
Yes, the fan voltage is independent of the supply voltage and supports any fan voltage.
1.20V to 2.60V (typical).