lt3573 Linear Technology Corporation, lt3573 Datasheet - Page 18

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

TYPICAL APPLICATIONS
LT3573
18
V
V
5V
IN
5V
IN
C1
10
R6
59k
C1
10
R6
28.7k
μ
μ
F
F
R5
10k
R1
200k
R2
90.9k
R5
10k
R1
200k
R2
90.9k
C2
10nF
C2
10nF
Low Input Voltage 5V Isolated Flyback Converter
SHDN/UVLO
R
TC
SS
SHDN/UVLO
TC
R
SS
ILIM
ILIM
VC
VC
R7
56.2k
R7
57.6k
C3
3300pF
C3
1000pF
±12V Isolated Flyback Converter
3573 TA02
LT3573
LT3573
GND
V
GND
V
IN
IN
TEST
TEST
R
BIAS
R
R
V
BIAS
REF
SW
SW
R
V
REF
SW
SW
FB
IN
FB
IN
T1: COILTRONICS VPH1-0076-R
D1, D2: B240A
D3: 1N4148
C5, C6: MURATA, GRM32ER71A476K
T1: PULSE PA2454NL OR WÜRTH ELEKTRONIK 750310471
D1: B340A
D2: 1N4148
C5: MURATA, GRM32ER71A476K
C6
0.22
C6
0.22
118k
R4
6.04k
80.6k
R3
R4
6.04k
R3
μ
μ
F
F
R8
2k
R8
2k
D3
D2
43.6
24
μ
T1
μ
T1
H
H
3:1
2:1:1
2.6
10.9
10.9
μ
H
D1
D2
μ
μ
D1
H
H
3573 TA03
C5
47
C6
47
C5
47
μ
μ
μ
V
12V, 100mA
V
V
V
–12V, 100mA
F
F
V
5V, 350mA
V
F
OUT1
OUT1
OUT2
OUT2
OUT
OUT
+
–
+
–
+
–
3573f