Log in or register
to manage email notifications about changes to datasheets or PCNs for this part.
The AM9799 is a single-phase DC brushless motor driver IC featuring BiCMOS process. It is suitable for fan motor drivers for low voltage equipment such as the note personal computers. The AM9799 includes lock shutdown, automatic restart, frequency generator (FG), have been incorporated into one chip. When the motor is under lock condition, lock shutdown function turns off the output current. When the lock condition is removed, the IC automatically restarts and allows DC fan to run. In addition, the FG function is to output rotation speed signal. It features MOS-FET driver circuit for better saturation characteristics. Slew late of amplifiers and feedback resistors are optimized to achieve low-noise motor operation.
Lock Detection and Rotational Speed Sensing Mechanisms are Built-in
Rotor-locked Protection and Automatic Restart When the Motor Lock is Undone
Hall Bias Built-in and Hall Inputs Have a Hysteresis