SG5842JA Fairchild Semiconductor, SG5842JA Datasheet - Page 12
SG5842JA
Manufacturer Part Number
SG5842JA
Description
The highly integrated SG5842A/JA series of PWM controllers provides several features to enhance the performance of flyback converters
Manufacturer
Fairchild Semiconductor
Datasheet
1.SG5842JA.pdf
(15 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SG5842JASZ
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
© 2007 Fairchild Semiconductor Corporation
SG5842A/SG5842JA • Rev. 1.4.3
Reference Circuit
CN1
BOM
1
2
3
Reference
BD1
C10
C11
C1
C2
C3
C4
C5
C6
C7
C8
C9
D1
D2
D3
D4
Q1
F1
L1
L2
L3
TR1
VZ1
L1
CC 1000pF/100V
C1
CC 0.01µF/500V
XC 0.68µF/300V
Diode 20A/100V
EC 1000µF/25V
XC 0.1µF/300V
Choke (900µH)
Diode BYV95C
FUSE 4A/250V
EC 470µF/25V
CC 222pF/50V
CC 470pF/50V
EC 120µ/400V
YC 222p/250V
TVS P6KE16A
Choke (10mH)
Inductor (2µH)
Component
EC 10µF/50V
Diode FR103
BD 4A/600V
R1
R2
R5
R7
LED
R9
1
2
3
4
L2
U1
SG5842A/JA
GND
FB
VIN
RI
C2
SENSE
GATE
VDD
C5
RT
4
Figure 15. Reference Circuit
THER2
8
7
6
5
BD1
R10
C11
C4
1
R16
R1, R2, R5, R7
+
1
C9
Reference
12
THER2
C3
D2
+
R10
R11
R12
R13
R14
R15
R16
VZ1
Q2
R3
R4
R6
R8
R9
U1
U2
U3
T1
Q2
R8
R3
R12
D4
U2
T1
U3
Transformer (600µH-PQ2620)
C6
1
3
R13
R
Q1
Thermistor TTC104
R 154KΩ 1/8W 1%
R 39KΩ 1/8W 1%
R15
IC SG5842A/JA
C10
R 100Ωm 1/8W
R4
R 470KΩ 1/4W
R 100KΩ 1/2W
R 4.7KΩ 1/8W
R 4.7KΩ 1/8W
MOS 7A/600V
Component
R 33KΩ 1/8W
R 470Ω 1/8W
R 2KΩ 1/8W
R 47Ω 1/4W
R 0.3Ω 2W
R 0Ω 1/8W
R14
IC PC817
2
IC TL431
VZ 9G
C7
+
1
VO+
R11
L3
2
www.fairchildsemi.com
+
C8
D3
R6
D1
Vo+