W83L784R_05 Datasheet, PDF (51/52 Pages) Winbond – Monitoring IC

W83L784R/ W83L784G
14. W83L784R/G SCHEMATICS
Rev.
0.1: Ignore.
0.2: W83L784R application circuit.
0.3: Change Pin5,Pin6,Pin11 to LOW Active.
Change Pin7 pull-up to 3VSB.
0.4: D1,D2,R9,R15 can be removed.
Change R1 to 0 Ohm. Add R27,R28,R29,R30(Reserved).
(Refer Application Notice 1)
VCC
0.5: Add a pull-up resistor R31.
C1
CAP
10u
C2
CAP
0.1u
3VCC 3VSB
VCC
Pull-up
R31
R
10K
VOLTAGE SENSORING CIRCUIT
VCORE
R8
R
10K
+3.3VIN
R1
0
VBAT
R25
R
99K
R
R26 R
232K
CPU_VCORE
3VCC
BT1
BATTERY
DC 10V
eg:
TO PIIX4
FANFAULT#
PWR_DN#
EXTSMI#
THRM#
R6
4.7K
R7
4.7K
R27
10K
R28
10K
R30
FANIN1
FANIN2
PWMOUT1
PWMOUT2
10K
SMI#
OVT#
SCL
SDA
U1
1
2
3
4
FANIN1/GPO1
FANIN2/GPO2
PWMOUT1
5
6
7
8
9
10
PWMOUT2
FANFAULT#/GPO3
PWR_DN#
SMI#
OVT#
SCL
SDA
W83L784R
20
VCC
CPUT1/PII1
CPUT2/PII2
19
18
17
VREF
VIN1
RESET#
VIN2(+3.3VIN)
VIN3(VBAT)
GND
16
15
14
13
12
11
BATFAULT#/GPO4
VT1/PII1
VT2/PII2
VREF
VCORE
+3.3VIN
VBAT
VCC
R29
10K
SMARTFAN1 Speed Control Circuit
Fan5VCC
Fan5VCC
R12 4.7K
R23
4.7K
R11 1K
Q1
3906
D1
1N4148
PWMOUT1
R19 4.7K
PWMOUT1 is
open-drain default.
When 784 is power-down,
Fan5VCC should be turned off.
Q4
MOSFET N
C3
+ Signal
Power
47u
GND
JP1
3
2
1
HEADER 3
R10
4.7K
R21 2K
FANIN1
R9
10K
SMARTFAN2 Speed Control Circuit
Fan5VCC
Fan5VCC
R18 4.7K
RESET#
TEMPERATURE SENSORING CIRCUIT
BATFAULT#
VREF
R14
R
30K 1%
PIID+
PIID-
VT1/PII1
C4
CAP
3300p
VREF
R13 R
10K 1%
RT1
10K 1%
THERMISTOR
VT2/PII2
Note:
1. CPUT1 is for CPU1 temperature and SMARTFAN 1
2. CPUT2 is for CPU2 temperature and SMARTFAN 2
3VCC
SDA
SCL
R
R3
0
R2 0
R
R4
R
4.7K
R5
R
4.7K
SMDAT
SMCLK
R24
4.7K
PWMOUT2
R20 4.7K
PWMOUT2 is
open-drain default.
When 784 is power-down,
Fan5VCC should be turned off.
R17 1K
Q2
3906
D2
1N4148
Q3
MOSFET N
C5
+ Signal
Power
47u
GND
JP2
3
2
1
HEADER 3
R16
4.7K
R22 2K
FANIN2
R15
10K
uP
RESET#
FANFAULT#
BATFAULT#
PWR_DN#
Title
Size
B
Date:
WINBOND ELECTRONICS CORP.
W83L784R Application Circuit
Document Number
784AP.SCH
Thursday, September 09, 1999
Sheet
1
Rev
0.5
of
1
- 46 -
Publication Release Date: Jan. 2005
Revision 1.1