W83637HF Datasheet, PDF (148/149 Pages) Winbond – LPC I/O

W83637HF
PWM Circuit for FAN speed control
FANPWM1
R44 100
R37 4.7K
R39 1K
Q2
PNP
3906
Q4
C45 +
MOSFET N
2N7002
10u
JP8
3
2
1
HEADER 3
+12V
D6 R41
4.7K
R45
27K
FANIN1
R47
10K
FANPWM2
R42 100
R36 4.7K
R38 1K
Q1
PNP
3906
C44
Q3
+
MOSFET N
2N7002
10u
JP7
3
2
1
HEADER 3
+12V
D5 R40
4.7K
R43
27K
FANIN2
R46
10K
Temperature Sensing
VREF
SYSTIN
VTIN
CPUTIN
RT1
R48
10K 1%
THERMISTOR
RT2
R49
10K 1%
THERMISTOR
R52
30K
C46
3300P
CPUD+
CPUD-
FROM CPU'S THERM DIODE
Voltage Sensing
CPUVCO
IO+12V
VREF
R54
10K
R55
28K 1%
R57
56K 1%
R56
10K 1%
R58
232K 1%
CPUVCORE
AGND
VIN1
IO-12V
VIN2
IO5V
R51
10K
BEEP
R50
100
LS1
SPEAKER
Q5
NPN
R53
IOBAT
2M
CASEOPEN#
S1
SW SPST
WINBOND Electronics Corp.
Title
Size
B
Date:
H/W MONITOR
Document Number
637HFD5.SCH
星期四, 六月 13, 2002
WINBOND ELECTRONICS CORP.
Sheet
5
of 7
Rev
0.3
- 143 -
Publication Release Date: June 25, 2003
Revision 1.3