L6566B STMicroelectronics, L6566B Datasheet - Page 43

• 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 6.
1. Use One external diode from V
2. Use one external diode from SS (#14) to V
3. If C
4. If C
5. When T
6. Discharged to zero by V
Shutdown2
Protection Description Caused by
ADAPTIVE
UVLO
ss
ss
and the V
and the Vcc capacitor are such that the latch is tripped before V
J
< 110
by V
below V
threshold at
(lowering of
L6566B protections (continued)
Shutdown
Shutdown
It is worth reminding that “Auto-restart” means that the device will work intermittently as long
as the condition that is activating the function is not removed; “Latched” means that the
device is stopped as long as the unit is connected to the input power source and the unit
must be disconnected for some time from the source in order for the device (and the unit) to
restart. Optionally, a restart can be forced by pulling the voltage of pin 16 (AC_OK) below
0.45 V.
by V
light load)
V
cc
low
cc
ccoff
o
COMP
C
going
capacitor are such that V
ccoff
cc
V
V
V
(
(
going below UVLO
V
V
V
VCOMP
VCOMP
COMPOFF
cc
cc
COMPO
COMP
COMPL
< 9.4V
< 7.2V
FF
(#15) to AC_OK (#16), cathode to AC_OK
<
>
>
)
)
behavior
Latched
restart
Auto
REF
IC
cc
falls below UVLO before latch tripping
(#10), cathode to V
restart
Vcc
5 V
(V)
10
(mA)
IC Iq
0.33
0.18
mA
REF
VREF
(V)
0
0
cc
falls below UVLO
SS
0
0
(Figure 21 on page
VCOMP
(Figure 21 on page
(V)
0
0
Application information
OSC
(V)
0
0
34)
FMOD
0
0
34)
VFF
0
0
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