SG684965DZ Fairchild Semiconductor, SG684965DZ Datasheet - Page 13

• 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
CY1 (Option)
C1
C2
C3
C4
C6
C7
C8
C9
C10
D1
D2
D4
D5 (Option)
F1
L1
L
N
Reference
C6
1
2
3
F1
GND
FB
NC
2
-
SG6849
BD DI106 1A/600V
YC 102p/400V
CC 0.01μF/500V
EC 10μF/400V 105ºC
CC 1000p/500V
EC 10μF50V
CC 472p/0805
CC 102p/100V 1206
EC 470μF10V 105ºC
EC 470μF10V 105ºC
CC 222p/0805
Diode FR107
Diode FR102
Diode SB360
ZD 6.8V/0.5W
R 1Ω/0.5W Resistor
Inductor 20mH 6*8mm
U1
SENSE
GATE
VDD
BD1
Figure 21. Reference Circuit (with Secondary-Side Feedback)
+
6
5
4
4
Component
+
1
C1
L1
(Continued)
R7
2
+
C2
+
1
R1
R2
C4
R8
C3
R5
Q1
R6
Q1
R7
R12
U1
U2
U3
L2
R1,R2
R4,R3
R5
R6
R10
R8
R11
R13
R14
T1
1
D1
Reference
13
D2
R3
R4
2
10
9
8
5
7
4
3
T1
U2
CY1
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
R 100Ω/1/8W
R 33kΩ/0805
R 33kΩ/1/8W
R 4.7kΩ/0805
Transformer EE-16
IC SG6849 (Green PWM IC)
IC PC817
IC TL431
1
2
1,2
3,4
R11
2
R10
D4
C7
Component
1
+
C8
1
U3
D5
R14
1
L2
C10
2
+
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C9
R13
R12
GND
Vo