7
dc2131afb
DEMO MANUAL DC2131A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
-
PRODUC
TI
ON
HZ
TIM
K
.
3
5-
23-16
10
V
10
V
10
V
ALL
RESISTO
RS
AND
CAPACITO
RS
ARE
IN
0603.
NOTE: UNLESS OTHERWISE
SPECIFIED
25
V
DI
S
IS
ET
GSNS
VOUT
ITH
GSNS
PGFB
INTVCC
GSNS
GSNS
DIR
PGFB
VIN
VIN
VIN
SW
INTVCC
INTVCC
DIR
SW
INTVCC
VOUT
INTVCC
VOUT
VIN
REVISION HIST
OR
Y
DESCRI
PT
IO
N
D
AT
E
APPROVED
EC
O
RE
V
REVISION HIST
OR
Y
DESCRI
PT
IO
N
D
AT
E
APPROVED
EC
O
RE
V
REVISION HIST
OR
Y
DESCRI
PT
IO
N
D
AT
E
APPROVED
EC
O
RE
V
SI
ZE
DATE:
IC N
O.
RE
V.
SHEET
OF
TI
TLE:
AP
PR
OV
AL
S
PCB DES.
APP ENG
.
TE
C
H
N
O
LO
G
Y
Fax: (408)434-0507
M
ilp
itas,
CA 95035
Phone: (408)432-1900
1630 M
cCarthy Bl
vd.
LTC Confidential-For Customer Use
Only
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TH
LI
NEAR
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LO
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PARTS.
SCALE =
NONE
www.
lin
ear
.c
om
3
Thursday, September 22, 2016
11
15VIN, +/- 5A MONOLITHIC BUCK REGULATOR
HZ
TIM K.
N/A
LTC3623EUDD
DEMO CIRCUIT 2131A
SI
ZE
DATE:
IC N
O.
RE
V.
SHEET
OF
TI
TLE:
AP
PR
OV
AL
S
PCB DES.
APP ENG
.
TE
C
H
N
O
LO
G
Y
Fax: (408)434-0507
M
ilp
itas,
CA 95035
Phone: (408)432-1900
1630 M
cCarthy Bl
vd.
LTC Confidential-For Customer Use
Only
CU
ST
OM
ER
N
OT
IC
E
LI
NE
AR
T
EC
HN
OL
OG
Y H
AS
M
AD
E A
B
ES
T E
FF
OR
T T
O D
ES
IG
N A
CI
RC
UI
T
TH
AT
M
EE
TS
C
US
TO
M
ER
-S
UP
PL
IE
D
SPEC
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AT
IO
NS;
HO
WEVER,
IT
REMAI
NS
THE
CUSTO
M
ER'S
RESPO
NSI
BI
LI
TY
TO
VERI
FY PRO
PER AND RELI
ABLE O
PERATI
ON I
N THE
ACTUAL
AP
PL
IC
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IO
N.
C
OM
PO
NE
NT
S
UB
ST
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A
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P
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CIRCUIT
BOARD L
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AY
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ICANT
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CIRCUIT
PERF
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LI
ABI
LIT
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ON
TACT
L
IN
EAR
TECHNO
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GY APPLI
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INEERI
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FO
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ASSI
STANCE.
THI
S C
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IT
IS
P
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PR
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T
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IN
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HN
OL
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SC
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AT
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SUPPLI
ED
FO
R
USE
WI
TH
LI
NEAR
TECHNO
LO
GY
PARTS.
SCALE =
NONE
www.
lin
ear
.c
om
3
Thursday, September 22, 2016
11
15VIN, +/- 5A MONOLITHIC BUCK REGULATOR
HZ
TIM K.
N/A
LTC3623EUDD
DEMO CIRCUIT 2131A
SI
ZE
DATE:
IC N
O.
RE
V.
SHEET
OF
TI
TLE:
AP
PR
OV
AL
S
PCB DES.
APP ENG
.
TE
C
H
N
O
LO
G
Y
Fax: (408)434-0507
M
ilp
itas,
CA 95035
Phone: (408)432-1900
1630 M
cCarthy Bl
vd.
LTC Confidential-For Customer Use
Only
CU
ST
OM
ER
N
OT
IC
E
LI
NE
AR
T
EC
HN
OL
OG
Y H
AS
M
AD
E A
B
ES
T E
FF
OR
T T
O D
ES
IG
N A
CI
RC
UI
T
TH
AT
M
EE
TS
C
US
TO
M
ER
-S
UP
PL
IE
D
SPEC
IFIC
AT
IO
NS;
HO
WEVER,
IT
REMAI
NS
THE
CUSTO
M
ER'S
RESPO
NSI
BI
LI
TY
TO
VERI
FY PRO
PER AND RELI
ABLE O
PERATI
ON I
N THE
ACTUAL
AP
PL
IC
AT
IO
N.
C
OM
PO
NE
NT
S
UB
ST
IT
UT
ION
A
ND
P
RI
NT
ED
CIRCUIT
BOARD L
AYOUT
M
AY
SIGNIF
ICANT
LY
AF
FE
CT
CIRCUIT
PERF
ORM
ANCE OR RE
LI
ABI
LIT
Y. C
ON
TACT
L
IN
EAR
TECHNO
LO
GY APPLI
CATI
ONS ENG
INEERI
NG
FO
R
ASSI
STANCE.
THI
S C
IR
CU
IT
IS
P
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PR
IE
TA
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T
O L
IN
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HN
OL
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ND
SC
HE
M
AT
IC
SUPPLI
ED
FO
R
USE
WI
TH
LI
NEAR
TECHNO
LO
GY
PARTS.
SCALE =
NONE
www.
lin
ear
.c
om
3
Thursday, September 22, 2016
11
15VIN, +/- 5A MONOLITHIC BUCK REGULATOR
HZ
TIM K.
N/A
LTC3623EUDD
DEMO CIRCUIT 2131A
C3
0.01uF
R7 10K
R10 (OPT)
R17 100K
R9
0
Ohm
C6
4.7uF
JP8
PGFB
L1 1uH
JP6
CCM
DCM
SYNC
MODE/SYNC
1
3
2
4
6
5
R25
OPT
R18
(OPT)
COUT1 100uF
10V
1210
R2
43K
1%
R24
OPT
E3
IM
O
N
E5
PGOOD
C7
1nF
R3
100K
1%
JP1
1.0V
U1
LTC3623EUDD
ISET
1
PGOOD
2
RUN
3
GSNS
4
PVIN
5
SW
6
NC
7
MODE/SYNC
8
PGND
9
PGND
10
PGND
11
PGND
12
VOUT
13
NC
14
SW
15
PVIN
16
SVIN
17
BOOST
18
INTVCC
19
PGFB
20
IM
O
N
21
DIR
22
RT
23
ITH
24
25
PGND
C10 OPT
R14 (OPT)
JP4
3.3V
R1
24.9K
1%
R20
(OPT)
R19
100K
R12 1
R13 (OPT)
JP3
2.5V
C5
0.1uF
R21
OPT
E1
VIN 4V
to
15V
C4
0.1uF
R4
196K
1%
E8
VOUT 2.5V
/
5A
CIN2 2.2uF
25V 0402
JP2
1.5V
R8
1M
C11 OPT
E2
GND
C12 OPT
CIN3 10uF
25V 1206
COUT2
OPT 1210
R5
(OPT)
JP5
5V
R22
0
E9
GND
+
CIN4 22uF
20V 20TQC22MYFB
R23
0
R6
0
Ohm
C8
100pF
JP7
O
N
OFF
RUN
1
3
2
E7
SYNC
+
COUT4
(OPT)
D7
OPT
CIN1 2.2uF
25V 0402
R16
5.49K
C9
OPT
+
COUT3
(OPT)
R11 (OPT)
C1
0.01uF
R15
33.2K