SOT-23 SMBUs Fan Speed Controller Design Extends Battery Life and Reduces Noise based on LTC1695

SOT-23 SMBUs Fan Speed Controller Design based on LTC1695. The fan speed is easily programmed by sending a 6-bit digital code to the LTC1695 via the SMBus. This code is converted into an analog reference voltage that is used to regulate the output voltage of the LTC1695 internal linear regulator