w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 150

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

PWM Circuit for FAN speed control
Temperature Sensing
Voltage Sensing
FANPWM1
R44
100
SYSTIN
CPUVCO
CPUTIN
VTIN
IO+12V
VREF
VREF
R37
R39
Q4
MOSFET N
2N7002
R55
28K 1%
R57
56K 1%
4.7K
1K
C45
10u
R52
R48
R49
R54
10K
3906
+
Q2
PNP
JP8
HEADER 3
10K 1%
10K 1%
30K
3
2
1
R56
10K 1%
R58
232K 1%
C46
3300P
RT1
RT2
+12V
THERMISTOR
THERMISTOR
D6
CPUVCORE
VIN1
VIN2
AGND
IO-12V
R41
4.7K
CPUD+
CPUD-
R45
27K
FROM CPU'S THERM DIODE
R47
10K
FANIN1
FANPWM2
R42
- 145 -
100
R36
R38
Q3
MOSFET N
2N7002
4.7K
1K
C44
10u
+
Q1
PNP
3906
JP7
HEADER 3
3
2
1
Publication Release Date: March, 2006
+12V
D5
R40
4.7K
R43
27K
W83637HF/HG
WINBOND Electronics Corp.
Title
Size
Date:
B
R46
10K
IOBAT
BEEP
H/W MONITOR
Document Number
637HFD5.SCH
FANIN2
,
13, 2002
IO5V
R53
2M
R51
10K
WINBOND ELECTRONICS CORP.
Sheet
Revision 1.6
S1
SW SPST
Q5
NPN
R50
100
LS1
SPEAKER
5
CASEOPEN#
of
7
Rev
0.3