SG6859 Fairchild Semiconductor, SG6859 Datasheet - Page 10

• Manufacturer Part Number: SG6859
• Description: Low Cost Green-Mode PWM Controller
• Manufacturer: Fairchild Semiconductor

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Low Cost Green-Mode PWM Controller for Flyback Converters
REFERENCE CIRCUIT
BOM
BD1
CX1
CY1
C1
C2
C3
C4
C6
C7
C8
C9
C10
C11
D1
D2
D4
D5
F1
L1
© System General Corp.
Version 1.2.1(IAO33.0067.B2)
Reference
L
N
(Optional)
(Optional)
(Optional)
(Optional)
F1
CX1
C6
BD 1A/500V
XC 0.1uF
YC 102P/400V (Y1)
CC 103P/500V
EC 10µF/400V 105°C
CC 102P/500V
EC 10µ/50V
CC 472P 0805
CC 102P/100V 1206
EC 470µ/10V 105°C
EC 220µ/10V 105°C
CC 222P 0805
N.C.
Diode FRI07
Diode FR102
Diode SB360
ZD 6.8V 0.5W
R 1Ω/0.5W
20mH 6*8mm
2
Component
R9
1
2
3
BD1
U1
GND
FB
RI
SENSE
GATE
4
VDD
1
C1
6
5
4
L1
R7
C4
2
C2
C11
R8
1
R15
R1
R2
1
R5
R6
C3
D1
Q1
D2
R3
R4
L2
Q1
R1,R2
R3,R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
T1
U1
U2
U3
2
Reference
10
9
8
5
7
U2
- 10 -
T1
(Optional) R 10Ω 1206
CY1
1,2
3,4
2
R10
www.sg.com.tw
D4
R 750KΩ 1206
IC SG6859
TL431
10uH 6mm
MOSFET 1A/600V
R 47KΩ 1206
R 47Ω 1206
R 4.7Ω 1206
R 100Ω 0805
R 10Ω 1206
R 100KΩ 0805
R 100Ω 1/8W
R 33KΩ 0805
R 33KΩ 1/8W
R 4.7KΩ 0805
R 0Ω 0805
EE-16
PC817
R11
Component
C7
1
C8
U3
R14
1
1
D5
L2
C10
2
C9
Product Specification
• www.fairchildsemi.com
R13
R12
September 28, 2007
VO
GND
SG6859