EMC6D103_07 datasheet(91/92 Pages) SMSC

Part #	EMC6D103

Description	Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features

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Manufacturer	SMSC [SMSC Corporation]

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Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features

Datasheet

SMSC EMC6D103

91

Revision 0.3 (03-01-07)

DATASHEET

Figure B.2 Fan Drive Circuitry (Apply to PWM Driving One Fan)

Figure B.3 Fan Tachometer Circuitry (Apply to Each Fan)

MMBT2222

470

3.3V

Fan

M

12V

PWMx

Note: For fans controlled directly by a PWM, it is suggested to implement

the optional diode (D1) to protect the tachometer input from large voltage

spikes generated by the fan.

10k

3.3V

Tach

Output

from Fan

TACH

Input

D1

IN4148

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