The AP1308 is single phase high efficient directPWM drive IC, which is suited for small fans (suchas CPU cooling fans). The low switching noise andeffective motor drive are another advantage. Allfunctions, including lock shutdown, automaticrestart, rotation detection (RD), and rotationdetection output (FG) have been incorporated intoone chip. When the motor is under lock condition,lock shutdown function turns off the output current.When the lock condition is removed, the ICautomatically restarts and allows DC fan to run. Inaddition, the RD function is to detect the motorstatus and the FG is to provide the rotation speed.
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