Intel 4 620 JM80547PG0722MM Data Sheet

94

The boxed processor's fan heatsink requires a constant +12 V supplied to pin 2 and does not 
support variable voltage control or 3-pin PWM control. 

The power header on the baseboard must be positioned to allow the fan heatsink power cable to 
reach it. The power header identification and location should be documented in the platform 
documentation, or on the system board itself. 

 shows the location of the fan power 

connector relative to the processor socket. The baseboard power header should be positioned 
within 110 mm [4.33 inches] from the center of the processor socket.

+12 V: 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

—

—

—

1.1

—

—

1.5

2.2

1.0

A

A

Second

—

SENSE: SENSE frequency

—

2

—

pulses per fan 

revolution

1

1.

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

CONTROL

21

25

28

kHz

2, 3

2.

Open drain type, pulse width modulated.

3.

Fan will have pull-up resistor to 4.75 V maximum of 5.25 V.

Pin

Signal

1 2 3 4

1

2

3

4

GND

+12 V

SENSE
CONTROL

Straight square pin, 4-pin terminal housing with
polarizing ribs and friction locking ramp.

0.100" pitch, 0.025" square pin width.

Match with straight pin, friction lock header on
mainboard.

B

C

R110

[4.33]