Datasheet

LT3573
20
3573fd
For more information www.linear.com/LT3573
SHDN/UVLO
TC
SS
SW
VC GND BIAS
LT3573
3573 TA05
R6
19.1k
R5
10k
V
IN
12V TO 24V
(*30V)
V
IN
4:1:1
R1
499k
R2
71.5k
C1
10
µF
T1
24
µH
T1: PULSE PA2362NL
OR COILCRAFT GA3429-BL
D1: B340A
D3: PMEG6010
R4
6.04k
R3
76.8k
V
OUT
+
3.3V, 1A
V
OUT
–
D1
C5
47
µF
1.5µH
C3
1500pF
C4
4.7µF
C2
10nF
R7
25.5k
*OPTIONAL THIRD
WINDING FOR
30V OPERATION
D2
L1C
1.5
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
LT3573
3573 TA06
R6
59k
R5
10k
V
IN
5V
V
OUT
12V, 400mA
V
OUT
–
V
IN
3:1
D1
V
IN
R1
499k
R2
71.5k
C1
10
µF
C5
47
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