Diodes AH9279 Manuel d'utilisateur télécharger pdf (Page 9)

Data Sheet

TWO PHASE DUAL-COIL CMOS SMART FAN MOTOR DRIVER AH9279

Oct. 2011 Rev. 1. 3 BCD Semiconductor Manufacturing Limited

Typical Application

AH9279

VCC

DOB

GND

=5V or 12V

2.2

4.7

Coil 1 Coil 2

4.7

2.2

Figure 14. Typical Application 1 of AH9279 (Note 2)

Note 2:

1. D1 is an ordinary diode used to filter the noise from VCC and protect IC if VCC and GND are plugged

reversed.

2. C1=C2=C3=2.2µF typical, electrolytic capacitors are better. They should be fine tuned based on system

design.

3. R1=R2=4.7Ω typical. They can be cancelled according to system requirement.

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Diodes AH9279 Manuel d'utilisateur Page 9