SG684965DZ Fairchild Semiconductor, SG684965DZ Datasheet - Page 12

• Manufacturer Part Number: SG684965DZ
• Description: IC CTRLR PWM OTP UVLO CV/CC 8DIP
• Manufacturer: Fairchild Semiconductor

Specifications of SG684965DZ

• Output Isolation: Isolated
• Frequency Range: 60 ~ 70kHz
• Voltage - Input: 8 ~ 25 V
• Voltage - Output: 16.7V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Number Of Outputs: 1
• Duty Cycle (max): 80 %
• Mounting Style: Through Hole
• Switching Frequency: 70 KHz
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Flyback
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2008 Fairchild Semiconductor Corporation
SG6849 Rev. 1.6.1
Applications Information
BOM
BD1
CX1 (Option)
CY1 (Option)
C1
C2
C3
C4
C7 (Option)
C8
C9
D1
D2
D4
D5 (Option)
N
L
Reference
F1
CX1
2
-
BD DI106 1A/600V
YC 472pF/400V (Y1)
YC 102pF/400V (Y1)
CC 0.01μF/500V
EC 10μF/400V 105ºC
CC 1000pF/500V
EC 10μF/50V
CC 102pF/100V 1206
EC 470μF/10V 105ºC
EC 220μF/10V 105ºC
Diode FRI07
Diode FR102
Diode SB360
ZD 6.8V/0.5W
BD1
1
2
3
Figure 20. Reference Circuit (without Secondary-Side Feedback)
+
U4
SG6849
GND
FB
NC
4
Component
SENSE
1
GATE
C1
VDD
L1
6
5
4
2
R7
+
C2
+
R1
R2
C4
1
R8
F1
L1
L2
Q1
R1,R2
R3,R4
R5
R6
R7
R8
R10(Option)
T1
U4
Q1
R6
C3
R5
D1
1
Reference
12
D2
R3
R4
2
10
9
8
5
7
T1
CY1
R 1Ω/0.5W
Inductor 10μH 6mm
MOSFET 1A/600V
R 750kΩ/1206
R 47kΩ/1206
R 47Ω/1206
R 4.7Ω/0.5W
R 100Ω/0805
R 10Ω/1206
R 10Ω/1206
Transformer EE-16
IC SG6849 (Green PWM IC)
Inductor 20mH 6*8mm
1,2
3,4
R10
2
D4
C8
C7
Component
1
+
1
D5
L2
2
+
C9
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GND
VO