L6566B STMicroelectronics, L6566B Datasheet - Page 45

• Manufacturer Part Number: L6566B
• Description: IC CTRLR OVP OTP UVLO HV 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6566B

• Output Isolation: Isolated
• Frequency Range: 10 ~ 300kHz
• Voltage - Input: 8 ~ 23 V
• Power (watts): 750mW
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Output Current: 800 mA
• Output Power: 750 mW
• Input Voltage: 8 V to 23 V
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 75 %
• Selectable Multi-mode Operation: fixed frequency or quasi-resonant
• For Use With: 497-6452 - BOARD EVAL FOR L6566B497-6451 - BOARD EVAL FOR L6566B497-6450 - BOARD EVAL FOR L6566B497-6449 - BOARD EVAL FOR L6566A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6566B
Table 7.
Figure 30. Typical full-feature application schematic (FF operation)
OCP auto-restart
OCP latched
R15
R14
R13
264 Vac
88 to
Vin
R12
fuse
AC_OK
F1
CX1
VFF
DIS
NTC2
External circuits that determine IC behavior upon OVP and OCP
16
15
8
C4
Lx
10
VREF
C10
NTC1
CX2
6
FMOD
MODE/SC
R
R
R
CY1
R11
L1
L2
R
R
H
R
R6
L6566B
L1
L2
H
13
IC1
12
OSC
R16
C5
CY2
R
R
14
AC_OK
FF
OVP latched
B1
SS
AC_OK
FF
R
1
VFF
FF
HVS
VFF
9
COMP
≈ 10 R
C6
5
16
15
16
15
Vcc
SS
3
SS
14
C1
GND
14
11
L2
4
7
L6566B
L6566B
1N4148
ZCD
GD
CS
R18
10
VREF
R3
10
C3
VREF
D3 1N4148
R4
R2
D1
R1
R17
1N4148
D2
C2
R5
Q1
R
R
R
R
R
L1
L2
R
H
L1
L2
H
T1
Application examples and ideas
AC_OK
Diode needed if
Diode needed if
VFF
OVP auto-restart
C8A,B
C7 2.2 nF Y1
D4
AC_OK
VFF
SS
16
15
14
IC3 PC817A
4
3
1N4148
L6566B
SS
16
15
14
TL431
3
3
.
.
3
L6566B
3
2
+
+
1
1
1
10
1
1
VREF
.
+
.
3
+
3
R
R
⋅
R
⋅
R
10
L
10
L
L
L
1
2
10
1
2
−
VREF
Vout
−
3
C9
R7
3
R
R
L
L
1
1
R8
≥
≥
6
6
.
4
.
R9
4
R10
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