Smooth Drive Spindle Motor For Optical Drive Application With Power Integrated

The L7203 SPINDLE MOTOR IC includes a three phase brushless spindle motor controller and the power stage in switching mode. The device is de- signed for both 5V and 12V OPTICAL DRIVE ap- plication requiring up to 1.8A peak of current. The device is realized in BCD5, a 0.7 m Mixed technology. The spindle motor position detection is carried out by means of a single Comparator with hyster- esis. In the start-up phase the "inductive sense start up method" is used to detect the rotor posi- tion, determining the direction of starting rotation. This procedure is implemented by a Logic circuit on chip. The device applies three sinusoidal voltages to the motor coils. By STMicroelectronics
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L7203 Pinout, Pinouts
L7203 pinout,Pin out
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