L6566B STMicroelectronics, L6566B Datasheet - Page 44

• 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

Application examples and ideas
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Figure 28. Typical low-cost application schematic
Figure 29. Typical full-feature application schematic (QR operation)
R15
R14
R13
264 Vac
88 to
264 Vac
Vin
88 to
Vin
R12
fuse
F1
fuse
AC_OK
CX1
F1
CX1
VFF
DIS
MODE/SC
QR operation
Optional f or
VFF
DIS
NTC2
16
15
8
C4
Application examples and ideas
Lx
8
15
Lx
12
10
VREF
NTC1
10
CX2
NTC1
FMOD
CX2
VREF
12
6
MODE/SC
C4 R6
CY1
CY1
6
FMOD
L6566B
R6
13
OSC
IC1
L6566B
16
6
13
AC_OK
OSC
R3 470k
IC1
C5
C5
CY2
CY2
14
B1
14
SS
B1
SS
1
1
HVS
HVS
9
9
COMP
COMP
C6
C6
5
5
Vcc
3
Vcc
3
C1
GND
C1
GND
11
4
7
ZCD
GD
CS
11
4
7
C3
GD
CS
ZCD
R18
R3
C3
R2
QR operation
Optional f or
D3 1N4148
R4
D3
R4
D2
D1
R1
R2
D1
R1
1N4148
D2
C2
C2
R5
R5
Q1
Q1
T1
T1
C8A,B
C7 2.2 nF Y1
C8A,B
D4
C7 2.2 nF Y1
D4
IC3 PC817A
4
4
3
3
IC3
TL431
TL431
2
2
1
1
Vout
Vout
C9
C9
R7
R7
R8
L6566B
R8
R9
R9
R10
R10