Constant Temperature Hair Dryer Controller PT8A3405/06
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PT8A3405/6 family is designed for CTHD (Constant Temperature Hair Dryer).
The chips implement temperature sensor input and 8-speed motor control. They can control devices to work with different wind speeds and different temperature.
The PT8A3405 has a VR input used for speed setting.
For PT8A3406, two keys connected PB-pin to implement Up/Down function to control speed. The chips control HEAT output levels according to NTC inputs and speed settings.
