AM8933 Datasheet (AMtek) - 3-Phase Sensor-less Fan Motor Driver

AM8933, 3-Phase Sensor-less Fan Motor Driver

Fig.1 Block diagram PIN No 1 2 3 4 5 6 7 8 9 10 11 12 E-pad Pin Name FG FR COM VCC U PG W V FGS OSC PWM AG PG Function FG signal output terminal Forward and Reverse control terminal Motor center tap voltage input terminal Power supply terminal U phase output terminal Power ground terminal W phas

AM8933 Features

* l 1) Operation voltage 1.8 to 6.0V ia 2) Lock detection/Automatic restart function 3) Built-in FG (frequency generation) t 4) Thermal shutdown protection 5) Over current protection n

* Absolute Maximum Ratings (Ta = 25℃) 6) PWM speed control 7) Soft switching technique to reduce acoustic noise