EMC6D102 SMSC Corporation, EMC6D102 Datasheet - Page 85

• Manufacturer Part Number: EMC6D102
• Description: Fan Control Device
• Manufacturer: SMSC Corporation

Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
Appendix B Example Fan Circuits
SMSC EMC6D102
PWMx
The following figures show examples of circuitry on the board for the PWM outputs, tachometer inputs,
and remote diodes.
fans to one PWM output.
Note: These examples represent the minimum required components. Some designs may require
Figure B.1 Fan Drive Circuitry (Apply to PWM Driving Two Fans)
Figure B.2 Fan Drive Circuitry (Apply to PWM Driving One Fan)
additional components.
PWMx
3.3V
1k
Figure B.1
2.2k
3.3V
470
0
shows how the part can be used to control four fans by connecting two
3.3V
DATASHEET
MMBT3904
85
10
10
MMBT2222
Empty
MMBT2222
MMBT2222
Fan
M
12V
Empty
Empty
M
M
Fan1
Fan2
Revision 0.4 (06-15-06)
12
V