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

No. de Pieza. FC9921
Descripción  3-Pin Switch-Mode LED Lamp Driver IC
Descarga  8 Pages
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Fabricante  FS [First Silicon Co., Ltd]
Página de inicio  http://www.firstsilicon.co.kr/
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FC9921 Datasheet(HTML) 7 Page - 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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