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Part Name
Description
FAN7685 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
FAN7685
PC Power Supply Output Monitoring IC
Fairchild Semiconductor
FAN7685 Datasheet PDF : 14 Pages
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FAN7685/FAN7686/FAN7687
Internal Block Diagrams
Vcc
13
VS12
10
(9)
VS5
12
VS33
11
IS33
9
(8)
Vcc
Start-up
Vref
REF.
3.6V
Vref
POR
Oscillator
Reset
UVP
L
L
H
Delay
75ms
CLK
clr
L
R
L
PGI_O
OVP
L
L
CLK
PSON
clr
Delay
CLK
2.3ms
R
L
Debounce
L
73us
CLK
R
L
R
S QL
L
PWR
L
PSON
L
Debounce
L
38ms
R
CLK
3.6V
H
Q
H
L
L
L
H
FPO
L
3
FPO
Vcc
3.6V
150uA
L
4
PSON
14
PGO
2
GND
IS5
8
(7)
IS12
5
8*Iref
8*Iref 8*Iref
Vcc
Iref
6
RI
UVP
H
L
L
L
1.2V
1
Vref
PSON
PGI
L
H
R
CLK
H
Debounce
H
73us
Short
Detector
when AC ON
LH
H
Delay
clr 300ms
CLK
FAN7685
(FAN7686)
VCC12
13
VS12
10
VS5
12
VS33
11
IS33
9
IS5
8
IS12
5
ISVCC12
7
Vcc
Start-up
REF.
3.6V
Vref
POR
Oscillator
Power On Reset
Reset
UVP
Block
UVP
L
L
H
Delay
75ms
CLK
clr
CLK
PSON
clr
Delay
2.3ms
CLK
R
L
Debounce
L
73us
CLK
R
L
R
S QL
OVP
OVP
Block
L
LR
PGI_O
L
PSON
L
Debounce
L
38ms
R
CLK
3.6V
Q
L
L
L
L
3
FPO
H
FPO
Vcc
150uA
3.6V
L
4
PSON
H
14
PGO
2
GND
OCP
COMPs
Vcc
Iref
H
8*Iref
1.2V
Vref
6
1
RI
PGI
H
UVP
L
L
L
PSON
L
H
R
CLK
H
Debounce
H
73us
Short
Detector
when AC ON
LH
H
Delay
clr 300ms
CLK
FAN7687
FAN7687A
2
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