L6566A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6566A' PDF : 52 Pages View PDF
Table 6. L6566A protection
Protection
Description Caused by
OVP
OLP
Short-circuit
protection
2nd OCP
Output
overvoltage
protection
VZCD>VZCDth
for 4
consecutive
switching
cycles
VFF >
VFFlatch
Output overload
protection
Output short-
circuit protection
Transformer
saturation or
shorted
secondary diode
protection
VCOMP
=VCOMPHi
VSS > VSSDIS
VCOMP
=VCOMPHi
VSS > VSSLAT
VCOMP
=VCOMPHi
VSS >
VSSDIS(4)
VCOMP
=VCOMPHi
VSS >
VSSLAT(6)
VCS > VCSDIS
for 2-3
consecutive
switching
cycles
IC
behavior
Auto
restart(1)
Latched
Auto
restart(2)
Latched
Auto
restart
Latched
Latched
Vcc
restart
IC Iq
VREF
SS
(V) (mA) (V)
VCOMP OSC
(V)
(V)
5
2.2
5(6)
Unchanged(
6)
0
0
13.5 0.33
0
0
0
0
5
1.46
5(6)
VSS
<VSSLAT(3)
VCOMPHi(6)
0
13.5 0.33
0
0
0
0
5
1.46
0
VSS
<VSSLAT(6)
VCOMPHi(5)
13.5 0.33
0
0
0
0
5
0.33
0
0
0
0
FMOD
0
0
0
0
0
0
0
VFF
Unchanged
0
Unchanged
0
Unchanged
0
0
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