lt3573 Linear Technology Corporation, lt3573 Datasheet - Page 21

• Manufacturer Part Number: lt3573
• Description: Isolated Flyback Converter Without An Opto-coupler
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
12V TO
V
24V
IN
V
IN
12V
C1
10
R6
59k
μ
F
R5
10k
3573 TA08
R1
499k
R2
71.5k
C1
10
R6
28.7k
μ
F
5V Isolated Flyback Converter Using a Tiny Transformer
C2
10nF
R5
30k
R1
200k
R2
90.9k
SHDN/UVLO
TC
R
SS
ILIM
VC
Four Output 12V Isolated Flyback Converter
R7
20k
C2
10nF
C3
0.01μF
R
SHDN/UVLO
TC
SS
LT3573
ILIM
GND
V
VC
IN
R7
47.5k
C3
1000pF
TEST
LT3573
GND
T1: COILTRONICS VPH1-0076-R
D1-D4: B240A
D5: 1N4148
V
R
BIAS
IN
R
REF
V
SW
FB
IN
T1: BH ELECTRONICS L11-0059
D1: B340A
D2: 1N4148
TEST
118k
R3
R
BIAS
R
REF
V
SW
FB
IN
R4
6.04k
C6
0.22
μ
F
C6
0.22
80.6k
R4
6.04k
R8
2k
R3
D5
μ
F
43.6
R8
2k
μ
T1
D2
H
2:1:1:1:1
20
μ
T1
H
10.9
10.9
10.9
10.9
3:1
μ
μ
μ
μ
H
H
H
H
D1
D2
D3
D4
2.2
μ
D1
H
C5
47
C6
47
C7
47
C8
47
μ
μ
μ
μ
C5
47
V
12V, 60mA
V
V
12V, 60mA
V
V
12V, 60mA
V
V
12V, 60mA
V
F
F
F
F
3573 TA07
OUT1
OUT1
OUT2
OUT2
OUT3
OUT3
OUT4
OUT4
μ
V
5V, 600mA
V
F
OUT
OUT
+
–
+
–
+
–
+
–
–
LT3573
21
3573f