- on Miscellaneous Electronics
- Published in issue 12/2003 on page 0
Fan Controller using just Two Components
The Maxim MAX 6665 (www.maxim-ic.com) provides a complete temperature-dependent fan controller. It can switch fans operating at voltages of up to 24 V and currents of up to 250 mA.The IC is available from the manufacturer in versions with preset threshold temperatures between +40 C (MAX6665 ASA 40) and +70 C (MAX6665 ASA 70). The device’s hysteresis can be set by the user via the HYST input, which can be connected to +3.3 V, connected to ground, or left open.