f75387 Feature Integration Technology Inc., f75387 Datasheet - Page 46

• Manufacturer Part Number: f75387
• Description: ?1o C Accuracy H/w Monitor Ic With Automatic Fan Speed Control
• Manufacturer: Feature Integration Technology Inc.

PWMOUT1
PWMOUT2
JP1
CON3
JP4
CON3
FAN1 4_PIN FAN CONTROL
FAN2 4_PIN FAN CONTROL
4
3
2
1
4
3
2
1
1N4148
1N4148
D1
D4
12V
12V
C6
C11
R18
4.7K
R21 27K
0.1u
R31
4.7K
R34 27K
0.1u
R25
10K
R37
10K
FANIN1
FANIN2
PWMOUT1
PWMOUT2
DACOUT1
DACOUT2
R29
3.9K
R44
3.9K
3
2
5
6
12V
12V
+
-
+
-
Linear FAN1 CONTROL
U2A
U2B
Linear FAN2 CONTROL
1
7
LM358
R27
10K
LM358
R40
10K
PMOS
PMOS
C10
47u
C13
47u
JP3
CON3
JP5
CON3
Q2
Q5
3
2
1
3
2
1
1N4148
1N4148
44
D3
D6
C9
C15
R22
4.7K
R26 27K
0.1u
R38
4.7K
R41 27K
0.1u
R30
10K
R45
10K
FANIN1
FANIN2
PWMOUT1
PWMOUT2
VCC3V
R23 330
VCC3V
R42 330
PWM FAN2 SPEED CONTROL( 3wire FAN )
PWM FAN1 SPEED CONTROL( 3wire FAN )
R19
1K
R35
1K
Q4
MOSFET N
2N7002
Q7
MOSFET N
2N7002
Title
Size
Date:
R16
R17 4.7K
R32
R33 4.7K
B
4.7K
4.7K
Feature Integration Technology Inc.
Document Number
C7
47u
C12
47u
F75387S Demo Circuit
12V
12V
2N3906
Q3
2N3906
Q6
JP2
CON3
JP6
CON3
3
2
1
3
2
1
1N4148
1N4148
D2
D5
C8
C14
0.1u
0.1u
R20
4.7K
R24 27K
R36
4.7K
R43 27K
Sheet
R28
10K
R39
10K
2
FANIN1.
FANIN2
of
2
July
Rev
0.1
, 2007
0.27P