DC1300A-A - Schematic

A
B
C
D
E
L3
470uH
VSW
3
2
R49
(Opt.)
R95
0
R24
R23
16.2
1/4W
C66
5.6nF
100V
Q2
1
2
Q8 Q11Q39
Si7852DP
2
C1
3.3nF
100V
1206
Q14
HAT2169H
Q15
(Opt.)
C20
1.5nF
200V
-VOUTP1
R83
(Opt.)
C70
2.2nF
11
-VOUTS
SG
C82
75pF
R94 147
Q37
MMBT2907A
A
1
VSB
IS+
3
MODE
11
10
IS-
SLP
4
R9
100
C75
68pF
2
R46
619
R68
6.81K
C79
2.2nF
C76
(Opt.)
-VOUTS
C77
22uF
1210
-VOUTP
-VOUTS
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
C10
1.0nF
2
1
1%
R69
0
Customer Notice
R92
R41
4.53K
Q36
MBT3946DW1T1
5
C8
470pF
D6
4.3V
MMSZ4687T1
C9
0.22uF
6
4
R93
147
1%
FB/PH
-VOUTS
2
2
Q34
2N7002
2
2
1
VCC
3
R89
604
1
R91
10.0K
R66
100K
+VOUT
SS
R90
7.50K
R7
47K
VCC
1
Q27C
1
3
D3
12V
MMSZ5242BS
-VOUTS -VOUTP
-VOUTP
3
2
RUN/SS
C78
4.7nF
C30
2.2nF
250V
D29
PT1N4148WS
2
1
1
C81
10pF
12
SS
C88
VSW
PGND
R63
90.9K
VIN
3
Q27
FCX491A
SG
7
U2
LTC3726EGN
C7
100pF
47pF
D2
1N4148WS
FG
PT-
13
14
GND
5
R61
100
R87
0
R86
261K
PT+
PT-
6
8
SW
2
10
7
IS
GATE
15
6
4
5
FS/IN-
6
9
3
C73
470pF
-VOUTP
C71
1uF
8
SSFLT
C6
100pF
4
GND
2
C29
33nF
PGND
ULVO
VSLMT
1
C24
4.7uF
C55
1nF
1
T2
PA0297
C72
0.1uF
FB/IN+
VCC
5.1K
1
2
2
3
8
D4
4.7V
MMSZ5230BS
R22
28.7K
NDRV
VCp
R18
147K
R58
U1
LTC3725EMSE
-Vout
E4
1
R56
100
FS/SYNC
3
Rb
162K
220uF
6.3V
VSB
9
10K
R84
0
C80
+ C83
3
C27 2.2nF
2
Ra
10K
R76
470
1206
R85
(Opt.)
2
R6
1
R55
100
1%
1
R98
22
CUT
Q28
FMMT38C
R54
100
1%
1
Q6
MMBFJ201
3
3
D28
MMSZ5236BS
7.5V
VCC
Q26
FMMT619
Q27C
2
3
Q32
FMMT718
3
2
3
FMMT718
C31
C33
100uF
6.3V
1210
C69
2.2nF
200V
1206
R50
0.002
1W
VA
Q3
Q12
Q38
Si7852DP
16
3
7
C89
0.22uF
VIN
3
4
E3
2.4uH
PA1494.242
R1
R2
R51
R52
31.6
8
Q1
FMMT619
1
R3
100
R79
1.0K
2
9
VCp
4
+Vout
5V/20A
1
2.2K
D7
BAS21
R11
R12
1.0
10
R13
(Opt.)
1206
1
1
R97
+VOUT
L2
1
5
VCC
E2
2
1
11
T3
PA1005.100
3
3
1
C3
C4
C5
6.8uF
50V
1812
C2
6.8uF
50V
1812
3
SG
E1
R4
(Opt.)
25V
1
2
7 4 6 5 8
VA
ITH
-Vin
VIN
C67
4.7uF
D1
BAS21
5
4
+Vin
9V - 36V
D25
BAS21
T1
PA0901.005
6
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-A
Date:
Friday, June 05, 2009
Sheet
E
1
of
3
1
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