Datasheet
Application examples and ideas L6566B
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6 Application examples and ideas
Figure 28. Typical low-cost application schematic
IC1
L6566B
B1
C1
C3
Q1
R2
D2
R8
C9
D1
C7 2.2 nF Y 1
R9
R10
C8A,B
T1
ZCD
GD
CS
VccAC_OK
GND
VFF
COMP
D4
IC3
R4
D3
1
2
3
4
C6
R5
C2
Vin
88 to
264 Vac
F1
fuse
CX1 CX2
CY1
CY2
NTC1
Lx
SS
C5
VREFMOD E/ SC
C4 R6
HVSFMOD
OSC
DIS
TL431
R1
R3 470k
R7
Vout
Optional f or
QR operation
4
7
3
5
11
15
16
91413
8
1012
16
Optional f or
QR operation
Figure 29. Typical full-feature application schematic (QR operation)
IC1
L6566B
Vout
B1
C1
R4
C3
Q1
R2
D2
1N4148
R18
D1
C7 2.2 nF Y 1
C8A,B
T1
ZCD
GD
CS
Vcc
DIS
GND
VFF
COMP
D4
IC3 PC817A
R3
D3 1N4148
3
4
C6
R5
C2
Vin
88 to
264 Vac
F1
fuse
CX1 CX2
CY1
CY2
NTC1
Lx
SS
C5
VREF
FMOD
C4 R6
HVS
OSC
AC_OK
R1
MODE /SC
R12
R13
R14
R15
R8
C9
R9
R10
1
2
TL431
R7
NTC2
4
7
3
5
11
6
8
91413
16
10
61
15
12