L6566B STMicroelectronics, L6566B Datasheet - Page 20

• 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 information
20/51
Figure 7.
Figure 8.
R
Z1
Vcc_OK
0.85 mA
(pin 5)
(pin 4)
R
Vcc
I
Vcc
Z2
GD
charge
Vcc
Vcc
restart
Timing diagram showing short-circuit behavior (SS pin clamped at 5 V)
Zero current detection block, triggering block, oscillator block and
related logic
ZCD
OFF
ON
11
L6566B
100 mV
50 mV
5V
Strobe
+
-
+
-
Short circuit occurs here
5.7V
S/H
STABLE
MONO
BLANKING
Counter
4:1
TIME
Reset
COMP
9
OSCILLATOR
TURN-ON
FAULT
LOGIC
< 0.03T
blanking
START
rep
T
rep
FMOD
C
OSCILLATOR
MOD
AUXILIARY
R
S
FFWD
6
line
Q
VFF
15
PWM
R
MOD
DRIVER
R
13
OSC
T
7
4
GD
CS
+Vin
t
t
t
t
L6566B
Rs
Q