Intel Core 2 Extreme QX6850 BX80569QX6850 User Manual

117

+12V: 12 volt fan power supply

10.2

12

13.8

V

IC: 

- Peak Fan current draw
- Fan start-up current draw 
- Fan start-up current draw maximum 

duration

—
—
—

1.0

—
—

1.5
2.0
1.0

A
A

Second

SENSE: SENSE frequency

—

2

—

pulses per 

fan 

revolution

1

1.

Baseboard should pull this pin up to 5V with a resistor.

CONTROL

21

25

28

kHz

2, 3

2.

Open Drain Type, Pulse Width Modulated.

3. Fan will have a pull-up resistor for this signal to maximum 5.25 V.