Product Specification
Highly Integrated Green-Mode PWM Controller
SG5841/J
REFERENCE CIRCUIT
Q1
F1
BD1
R1
R2
CN1
1
3
1
2
3
L3
L1
L2
2
1
2
C1
C2
T1
4
1
Vo+
D1
VZ1
TR1
R5
R7
R3
C3
C4
D3
+
C7
+
+C8
C6
R4
C5
R6
D2
D4
Q2
U1
GND GATE
1
8
7
6
5
1
R12
2
3
FB
VDD
R16
VIN SENSE
4
RI
RT
R11
R9
R10
SG5841/J
C9
+
C11
R8
THER2
U2
C12
R13
R
C10
R14
U3
VO+
R15
BOM
Reference
BD1
C1
Component
BD 4A/600V
Reference
Q2
Component
MOS 7A/600V
XC 0.68µF/300V
XC 0.1µF/300V
CC 0.01µF/500V
EC 120µ/400V
YC 222p/250V
CC 1000pF/100V
EC 1000µF/25V
EC 470µF/25V
EC 10µF/50V
R1,R2
R3
R 1Mohm 1/4W
R 100Kohm 1/2W
R 47ohm 1/4W
R 750Kohm 1/4W
R 2Kohm 1/8W
R 0.3ohm 2W
C2
C3
R4
C4
R5,R7
R6
C5
C6
R8
C7
R9
R 33Kohm 1/8W
C8
R10
R11
R12
R13
R14
R15
R16
THER2
T1
R 4.7Kohm 1/8W 1%
R 470ohm 1/8W
R 0 ohm 1/8W
C9
C10
C11
C12
D1
CC 222pF/50V
CC 470pF/50V
R 4.7Kohm 1/8W
R 154Kohm 1/8W
R 39Kohm 1/8W
R 100ohm 1/8W
Thermistor TTC104
CC 102pF/50V(Option)
LED
D2
Diode BYV95C
TVS P6KE16A
Diode FR103
D3
D4
Transformer (600µH-PQ2620)
IC SG5841/J
IC PC817
F1
FUSE 4A/250V
Choke (900µH)
Choke (10mH)
Inductor (2µH)
Diode 20A/100V
U1
L1
U2
L2
U3
IC TL431
L3
VZ1
VZ 9G
Q1
© System General Corp.
Version 1.3.1 (IAO33.0017.B6)
- 11 -
www.sg.com.tw • www.fairchildsemi.com
September 20, 2007
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
