Datasheet

LT3574
6
3574f
block DiagraM
FLYBACK
ERROR
AMP
MASTER
LATCH
CURRENT
COMPARATOR
BIAS
R1
R2
C3
R6
V
OUT
+
V
OUT
–
V
IN
TC
BIAS
SS
SWV
IN
V
IN
GND
V1
120mV
1.23V
V
C
D1
T1
N:1
I
1
7µA
I
2
20µA
R
SENSE
0.036Ω
C2
C1
L1A
•
•
L1B
R3
R4
C5
+
–
OSCILLATOR
TC
CURRENT
ONE
SHOT
R
Q
S
S
g
m
+
–
A1
+
–
A5
+
–
+
–
A2
A4
2.5µA
+
–
3574 BD
Q2
R7
C4
R5
Q3
1.22V
Q4
Q1
DRIVER
SHDN/UVLO
R
ILIM
R
FB
R
REF
INTERNAL
REFERENCE
AND
REGULATORS