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L6566B View Datasheet(PDF) - STMicroelectronics

Part Name
Description
MFG CO.
L6566B
ST-Microelectronics
STMicroelectronics ST-Microelectronics
'L6566B' PDF : 51 Pages View PDF
L6566B
Application examples and ideas
Figure 30. Typical full-feature application schematic (FF operation)
F1
f use
NTC1
Vin
88 to CX1
264 Vac
Lx
CY 1
CX2
B1
C1
CY2
R1
C2
D1
T1
D4
R2
R16
D2
R15
C3
1N4148
MODE/SC
HVS
Vcc
AC_OK
ZCD
R3
12
1
5 11
16
R14
VFF
15
DIS 8
IC1
L6566B
GD
4
CS
7
10
6
13
14 9
3
R4
Q1
D3 1N4148
R17
R5
R18
R13
NTC2
VREF FMOD
OSC
SS COMP GND
R11
C10
R12
C4
R6
C5
C6
C8A,B
C7 2.2 nF Y1
IC3 PC817A 1
4
3
2
TL431
Vout
R7
R9
C9 R8
R10
Table 7.
External circuits that determine IC behavior upon OVP and OCP
OVP latched
OVP auto-restart
OCP latched
SS
VREF
RH
AC_OK 14
10
16
RL1
RFF
L6566B
VFF 15
RL2
RFF 10 RL2
OCP auto-restart
1N4148
SS
VREF
RH
AC_OK 14
10
16
RL1
RFF
L6566B
VFF 15
RL2
SS
RH
AC_OK 14
VREF
10
16
RL1
L6566B
VFF 15
RL2
Diode needed if
3.3
+ 1.3 103 RL1
1+ RL1
6.4
RL2
1N4148
SS
RH
AC_OK 14
VREF
10
16
RL1
L6566B
VFF 15
RL2
Diode needed if
3.3 + 1.3 103RL1 6.4
1+ RL1
RL2
45/51
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