7
dc1523af
DEMO MANUAL DC1523A
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 DIAGRAMS
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
O
P
TIO
N
A
L
CIRCUIT #
1
(1.
5
A OUTPUT)
BG2
TG
2
TG
1
SW2
SW1
BG1
CS
VIN
VOU
T
1
TG
1
SW1
BG1
TG
2
SW2
BG2
CS
SI
Z
E
DAT
E
:
IC
N
O
.
R
EV.
SH
EET
O
F
TITLE
:
APPROVALS
PCB DES.
APP ENG.
T
E
CHNO
L
O
G
Y
F
ax: (408)434-0507
M
il
p
it
as,
C
A
95035
P
hone
: (
408)432-1900
1630 M
cC
ar
th
y B
lvd
.
L
T
C
C
o
n
fi
d
en
ti
al
-F
o
r C
u
sto
m
er
U
se On
ly
CUSTO
M
E
R NO
TI
CE
LINEAR TECHNOLOGY HAS MADE A
BEST EFFORT TO DESIGN A
CI
RCUI
T THAT MEETS CUSTOMER-
SUPPLI
E
D SPECI
F
ICATI
O
NS;
HOW
EVER,
IT
REM
A
IN
S THE CUSTOM
E
R'S RESPONSI
B
IL
IT
Y TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT
SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGN
IFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILI
TY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS EN
GINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY
TO LINEAR TECHNOLOGY AND
S
CHE
M
A
T
IC
SUPPLIED FOR USE W
ITH LINEAR TECHNOLOGY PARTS.
S
CAL
E
=
NO
NE
www.lin
ea
r.c
o
m
3
Thur
sd
ay
, J
une
1
7,
2010
22
HIGH EFFICIENCY STEP-UP/DOW
N
DC/DC CONVERTER
AK
TAG
E
B.
N/
A
L
T
C
3789EGN
DEMO
CIRCUIT 1523A
SI
Z
E
DAT
E
:
IC
N
O
.
R
EV.
SH
EET
O
F
TITLE
:
APPROVALS
PCB DES.
APP ENG.
T
E
CHNO
L
O
G
Y
F
ax: (408)434-0507
M
il
p
it
as,
C
A
95035
P
hone
: (
408)432-1900
1630 M
cC
ar
th
y B
lvd
.
L
T
C
C
o
n
fi
d
en
ti
al
-F
o
r C
u
sto
m
er
U
se On
ly
CUSTO
M
E
R NO
TI
CE
LINEAR TECHNOLOGY HAS MADE A
BEST EFFORT TO DESIGN A
CI
RCUI
T THAT MEETS CUSTOMER-
SUPPLI
E
D SPECI
F
ICATI
O
NS;
HOW
EVER,
IT
REM
A
IN
S THE CUSTOM
E
R'S RESPONSI
B
IL
IT
Y TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT
SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGN
IFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILI
TY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS EN
GINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY
TO LINEAR TECHNOLOGY AND
S
CHE
M
A
T
IC
SUPPLIED FOR USE W
ITH LINEAR TECHNOLOGY PARTS.
S
CAL
E
=
NO
NE
www.lin
ea
r.c
o
m
3
Thur
sd
ay
, J
une
1
7,
2010
22
HIGH EFFICIENCY STEP-UP/DOW
N
DC/DC CONVERTER
AK
TAG
E
B.
N/
A
L
T
C
3789EGN
DEMO
CIRCUIT 1523A
SI
Z
E
DAT
E
:
IC
N
O
.
R
EV.
SH
EET
O
F
TITLE
:
APPROVALS
PCB DES.
APP ENG.
T
E
CHNO
L
O
G
Y
F
ax: (408)434-0507
M
il
p
it
as,
C
A
95035
P
hone
: (
408)432-1900
1630 M
cC
ar
th
y B
lvd
.
L
T
C
C
o
n
fi
d
en
ti
al
-F
o
r C
u
sto
m
er
U
se On
ly
CUSTO
M
E
R NO
TI
CE
LINEAR TECHNOLOGY HAS MADE A
BEST EFFORT TO DESIGN A
CI
RCUI
T THAT MEETS CUSTOMER-
SUPPLI
E
D SPECI
F
ICATI
O
NS;
HOW
EVER,
IT
REM
A
IN
S THE CUSTOM
E
R'S RESPONSI
B
IL
IT
Y TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT
SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGN
IFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILI
TY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS EN
GINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY
TO LINEAR TECHNOLOGY AND
S
CHE
M
A
T
IC
SUPPLIED FOR USE W
ITH LINEAR TECHNOLOGY PARTS.
S
CAL
E
=
NO
NE
www.lin
ea
r.c
o
m
3
Thur
sd
ay
, J
une
1
7,
2010
22
HIGH EFFICIENCY STEP-UP/DOW
N
DC/DC CONVERTER
AK
TAG
E
B.
N/
A
L
T
C
3789EGN
DEMO
CIRCUIT 1523A
Q6
A
Si
7948DP
Q6
A
Si
7948DP
2
8
1
7
Q6
B
Si
7948DP
Q6
B
Si
7948DP
4
6
3
5
Q7
B
Si
7958DP
Q7
B
Si
7958DP
4
6
3
5
Q7
A
Si
7958DP
Q7
A
Si
7958DP
2
8
1
7
