DC1320A - Schematic

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REVISION HISTORY
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice: Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
ECO
REV
DESCRIPTION
DATE
2
PROD
04/21/11
CHARLIE Z.
05/11/11
Charlie Z.
1
VIN
Q1
2
SUD50N03-09P-E3
D
E1
VIN+
Schematic corrections
2.1
CIN2
[1]
[1]
CIN3
[1]
J2
CIN5
CIN6
CIN7
OPT
OPT
OPT
OPT
VININTVCC
D1
R24
CBst
0.22uF
SW 8
1M
[1]
RUN/SS
R23
1
12
NC
21
NC
24
NC
25
NC
28
INTVCC
32
INTVCC
31
LTC3608
BOOST
0.1uF
16
PGOOD
17
VRNG
INTVCC
R26
[1]
R2
100pF
18
10K
RTH
1500pF
12K
34,35,36,
37,38,39,
E4
R30
162K
1%
B
INTVCC
EXTVCC
29
VFB
23
VISAHY
IHLP2525CZ-01
VOUT
OPT
COUT3
OPT
VO+
E7
COUT6
22uF
6.3V
COUT5
22uF
6.3V
COUT2
100uF
6.3V
COUT1
100uF
6.3V
VOUT
[1]
J4
J3
C
C7
4.7uF
10V
GND
E8
1
VO-
SVIN
C9
0.47uF
50V
E9
C10 OPT
EXTVCC
C11
VOUT
OPT
R29
JP2
10
R16
40.2K
1%
1.5V
JP3
SVIN
JP4
1
19.1K
1%
2.5V
2
3
JP8
B
R19
30.1K
1%
R20
1.8V
CCM
COUT4
VIN
INTVCC
R28
FCB
DCM
DYNAMIC LOAD CIRCUIT
L1 [1]
60.4K 1%
19
Cth
ITH
30
J5
IOSTEP
10mV/A
0.010
1%
27
Cthp
SVIN
10,14,15,
20,26,54,
E3
VON
SGND
C8
0.1uF
PGND
13
R1
10K
R25
VOUT
CSS
R27
RUN/SS
ION
3
JP7
100K
9
[1]
2
OFF
RPG
11
22
ON
INTVCC
NC
SW
FCB
C
SW
33,41,42,43,
44,45,46,55,
SW
47
1,2,3,4,5,6,7,48,
49,50,51,53, 52
PVIN
PVIN
SGND
3
U1 [1]
E2
PGOOD
IOSTEP_CLK
OPT
R31
OPT
40
GND
CIN4
D
E10
C12
CIN1
+
[1]
J6
VOUT
C2
1uF
10V
1
J1
VIN
C13
1uF
10V
APPROVED
JP5
R21
3.3V
13.7K
1%
C6
VOUT SELECT
(Opt)
[1]
A
ASSY
VIN
-A
5V - 20V
VOUT
8A MAX
D1
CMDHS-3
CIN1
150uF, 35V
CIN2, CIN3
U1
R26
R23
10uF, 35V
LTC3608EWKG
OPT
3.3 W
L1
1.0uH
CONTRACT NO.
APPROVALS
DRAWN MI
-B
9V - 32V
6A MAX
SDM10K45
100uF, 50V
10uF, 50V
LTC3609EWKGHV
35.7K
4.7 W
1.5uH
DATE
08/21/07
CHECKED
TECHNOLOGY
TITLE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
A
SCH, LTC3608EWKG/LTC3609EWKGHV, 8A HIGH POWER
DENSITY STEP-DOWN CONVERTER
APPROVED
ENGINEER
SIZE CAGE CODE
DESIGNER
DWG NO
REV
2.1
DC1320A
Friday, May 11, 2012
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SCALE:
FILENAME: 1320A-2.1.DSN
SHEET
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