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FC9920 Datasheet(PDF) 6 Page - First Silicon Co., Ltd

No. de Pieza. FC9920
Descripción  3-Pin Switch-Mode LED Lamp Driver
Descarga  7 Pages
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Fabricante  FS [First Silicon Co., Ltd]
Página de inicio  http://www.firstsilicon.co.kr/
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FC9920 Datasheet(HTML) 6 Page - First Silicon Co., Ltd

   
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FC9920
2012. 10. 31
6/7
Revision No : 0
Functional Block Diagram
Efficiency (%)
Input AC Line Voltage (VAC)
75 100
82
80
78
76
74
72
70
68
66
64
150
200
250
62
74
Figure 3. Typical Efficiency
Figure 4. Switch-On-Off Transition.
Ch1: VDRAIN, Ch3: IDRAIN
LEAD EDGE SPIKE
SWITCH OFF
Ch1
Ch3
M
100V
25mA
2.00µs
A
Ch1
106V
1
3
ZERO VOLTAGE
TRANSITION
3
1
Ch1
Ch3
M
100V
25mA
100ns
A
Ch1
106V
Figure 6. Switch-Off Transition. Ch1: VDRAIN,
Ch3: IDRAIN
Figure 5. Lead Edge Spike Ch1: VDRAIN,
Ch3: IDRAIN
Ch1
Ch3
M
100V
25mA
20 0ns
A
Ch1
106V
TSPIKE
trr
3
1
R
GND
DRAIN
VDD
S NQ
R
Q
REF
FC9920
Regulator
7.8V
Leading
Edge
Blanking
TBLANK = 300ns
-
+
TOFF = 10.5µs


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