DC1300A-B - Schematic

A
B
C
D
E
L3
(Opt.)
1
3
2
(Opt.)
VIN
VSW
R95
0
R23
R24
(Opt.)
1/4W
C66
3.3nF
100V
Q2
1
C1
1.5nF
100V
1206
-VOUTP1
3
Q27C
4
SG
C82
82pF
R94 147
Q37
MMBT2907A
VSB
3
3
MODE
IS+
7
SLP
RUN/SS
6
PGND
16
11
10
12
SW
IS-
R66
100K
+VOUT
R41
11.8K
C10
(Opt.)
4
R9
(Opt.)
R69
0
C75
68pF
2
R46
619
R68
19.6K
C79
2.2nF
C76
(Opt.)
-VOUTS
C77
22uF
1210
-VOUTP
-VOUTS
3
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
LINEAR TECHNOLOGY CORPORATION
Linear Technology Has Made A Best Effort To Design A
Circuit That Meets Customer-Supplied Specifications;
However, It Remains The Customer's Responsibility To
Verify Proper And Reliable Operation In The Actual
Application. Component Substitution And Printed
Circuit Board Layout May Significantly Affect Circuit
Performance Or Reliability. Contact Linear Technology
Applications Engineering For Assistance.
This Circuit Is Proprietary To Linear Technology And
Supplied For Use With Linear Technology Parts.
47K
-VOUTS
B
FB/PH
Customer Notice
R92
VCC
2
1
1%
SG
Q36
MBT3946DW1T1
5
C8
470pF
D6
4.3V
MMSZ4687T1
C9
0.22uF
3
Q27
FCX491A
-VOUTS
2
R93
147
1%
-VOUTS
A
1
Q34
2N7002
2
2
VCC
R91
10.0K
3
2
R7
47K
-VOUTP
SS
R90
7.50K
1
R89
715
1
1
-VOUTS -VOUTP
-VOUTP
3
D3
22V
MMSZ5251BS
13
C78
4.7nF
C30
2.2nF
250V
VIN
D29
PT1N4148WS
2
GND
SS
6
C81
10pF
2
1
1
VSW
PT-
R63
90.9K
47pF
D2
1N4148WS
14
U2
LTC3726EGN
C7
100pF
11
R86
261K
PT+
PT5
R87
0
C88
2
8
FG
15
6
4
R61
100
-Vout
1
R56
100
C70
3.9nF
8
10
7
IS
GATE
3
C73
470pF
E4
C71
1uF
5
FS/IN-
6
9
T2
PA0297
68uF
16V
1
SSFLT
C6
100pF
4
GND
2
C29
33nF
PGND
ULVO
VSLMT
1
C24
4.7uF
C55
4.7nF
1
5.1K
C72
0.1uF
FB/IN+
VCC
R58
U1
LTC3725EMSE
1
2
2
3
8
D4
4.7V
MMSZ5230BS
R22
28.7K
NDRV
VCp
R18
147K
1
R83
(Opt.)
R84
0
C80
+ C83
VSB
FS/SYNC
10K
Rb
162K
R76
470
1206
R85
(Opt.)
C27 2.2nF
2
Ra
10K
R55
100
1%
9
R6
1
2
3
CUT
Q28
FMMT38C
R54
100
1%
D28
MMSZ5236BS
7.5V
VCC
Q26
FMMT619
Q27C
2
3
Q32
FMMT718
3
2
R98
22
1
Q6
MMBFJ201
3
C31
C33
22uF
16V
1210
C69
220pF
200V
1206
R50
0.005
1W
VA
C20
(Opt.)
200V
FMMT718
3
Q3
Q12
Q38
Si7450DP
Q14
Q15
Si7852DP
2
Q8 Q11 Q39
Si7370DP
2
3
7
C89
0.22uF
R49
R3
100
3
4
E3
10uH
PULSE,
PA2050.103NL
R1
R2
R51
R52
75
8
Q1
FMMT619
1
R11
R12
R79
3.3K
2
9
VCp
4
+Vout
12V/8.4A
1
2.2K
D7
BAS21
1.0
10
R13
0
1206
1
R97
+VOUT
L2
1
5
VCC
E2
1
1
-Vin
2
3
11
T3
PA1005.100
3
3
SG
C3
C4
C5
6.8uF
50V
1812
C2
6.8uF
50V
1812
1
ITH
E1
R4
10
25V
6
7 4 6 5 8
VA
2
VIN
C67
4.7uF
D1
(Opt.)
5
4
+Vin
9V - 36V
D25
(Opt.)
T1
PA0910
1
L1
0.47uH
C
D
1630 McCARTHY BLVD.
MILPITAS, CA. 95035
408-432-1900
408-434-0507 FAX
Title
LTC3725EMSE, LTC3726EGN 9V-36Vin Forward Converter
Size
Document Number
Rev
Demo Circuit 1300A-B
Date:
Friday, June 05, 2009
Sheet
E
2
of
3
1
Similar pages