Datasheet

LT3574
20
3574f
SHDN/UVLO
TC
SS
SW
VC GND BIAS
LT3574
3574 TA05
R6
19.1k
R5
10k
V
IN
12V TO 24V
(36V*)
V
IN
4:1:1
R1
499k
R2
71.5k
C1
10
µF
T1
50
µH
T1: PULSE PA3018NL
OR WÜRTH ELEKTRONIK
750311304
D1: B340A
D3: PMEG6010
R4
6.04k
R3
76.8k
V
OUT
+
3.3V
0.5A
V
OUT
–
D1
C5
47
µF
3.1µH
C3
1500pF
C4
4.7µF
C2
10nF
R7
25.5k
*OPTIONAL THIRD
WINDING FOR
36V OPERATION
D2
L1C
3.1
µH
R8
2k
D3
C6
0.22
µF
TEST
R
ILIM
R
FB
R
REF
•
•
3.3V Isolated Flyback Converter
typical applications
12V Isolated Flyback Converter
SHDN/UVLO
TC
SS
SW
VC GND BIAS
LT3574
3574 TA06
R6
59k
R5
10k
V
IN
12V
V
OUT
12V
150mA
V
OUT
–
V
IN
3:1
D1
V
IN
R1
499k
R2
71.5k
C1
10
µF
C5
22
µF
T1
58.5
µH
6.5
µH
T1: COILTRONICS VP1-0102-R
D1: B340A
D2: PMEG6010
R4
6.04k
R3
178k
C2
10nF
C3
4700pF
R7
40.2k
R8
2k
D2
C6
0.22
µF
TEST
R
ILIM
R
FB
R
REF
•
•