Datasheet

ZCD
GATE
LM3450A
V
CC
GND
COMP
FB
HOLD
V
AC
V
ADJ
CS
DIM
FLT2
FLT1
I
SEN
PWM
V
REF
BIAS
V
OP1
V
OP2
RETURN
RETURN
V
OP1
V
OUT
EMI
FILTER
VREF
+
-
AC
MAINS
Q1
Q2
D1
D2
D3
D5
C1
C2
C4
C5
C6
C7
C8
D7
D6
C9
D8
C10
C12
C13
C14
C15
D9
C16
L1
L2
T1
R1 R2
R3
R5
R6
R8
R9
R11
R12
R13
R14
R15
R24
R25
D11D12
Q3
Q4
R28
HOLD
R27
D10
C11
L3
V
CC
V
ADJ
COMPBIAS
D18
D17
R7
Q6
R10
SOFTSTART
C3
D4
R4
AUX
AUX
R18
R19
R20
R21
C18
D13
+
-
+
-
PWM
V
OUT
OPTO1
OPTO2
V
OP2
V
OP1
V
CC
CONTROL
FEEDBACK
DIMMING
LED
LOAD
U1
V
SDIM
R17
C17
R16
V
SDIM
C19
R23
R22
R30 R29
R32
1.24V
Thermal
Protect
R26
1.24V
LMV431
D19
LM3450
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