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FC9921 Datasheet(PDF) 7 Page - First Silicon Co., Ltd

Part # FC9921
Description  3-Pin Switch-Mode LED Lamp Driver IC
PDF  8 Pages
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Manufacturer  FS [First Silicon Co., Ltd]
Direct Link  http://www.firstsilicon.co.kr/
Logo FS - First Silicon Co., Ltd

FC9921 Datasheet(HTML) 7 Page - First Silicon Co., Ltd

  FC9921 Datasheet HTML 1Page - First Silicon Co., Ltd FC9921 Datasheet HTML 2Page - First Silicon Co., Ltd FC9921 Datasheet HTML 3Page - First Silicon Co., Ltd FC9921 Datasheet HTML 4Page - First Silicon Co., Ltd FC9921 Datasheet HTML 5Page - First Silicon Co., Ltd FC9921 Datasheet HTML 6Page - First Silicon Co., Ltd FC9921 Datasheet HTML 7Page - First Silicon Co., Ltd FC9921 Datasheet HTML 8Page - First Silicon Co., Ltd  
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FC9921
2012. 10. 31
7/8
Revision No : 0
75
100
125
150
175
200
225
250
275
ZERO VOLTAGE
TRANSITION
Figure 4. Switch-Off Transition. Ch1: V
DRAIN, Ch3: IDRAIN
LEADING EDGE SPIKE
Figure 5. Typical Efficiency
82
80
78
76
74
72
70
68
66
64
62
Input AC Line Voltage (VAC)
Figure 3. Typical Efficiency
25mA
SWITCH OFF
Figure 6. Switch-Off Transition. Ch1: V
DRAIN, Ch3: IDRAIN
Functional Block Diagram
VDD
REF
R
DRAIN
GND
FC9921
Regulator
7.5V
T
BLANK = 300ns
+
-
S
R
Q
Q
T
OFF = 10.5µs



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