
Application examples and ideas L6566B
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Figure 31. Frequency foldback at light load (FF operation)
Figure 32. Latched shutdown upon mains overvoltage
R1
L6566B
Vre f
R
T
10
9
13
COMP
OSC
BC857C
MODE/S
12
R2
L6566B
Vcc
5
8
VFF
BC847
DIS
Vin
15
L6566B
8
VFF
BC857
DIS
Vin
15
Vr ef
10
Rq
>10 Rq