8
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
1/2
VIN
, 1
0A
NOTES: UNLESS OTHER
W
ISE SPECIFIED,
1. CAP
ACIT
O
RS
AND RESIST
ORS
ARE
0603.
36V
-60V
O
N
RU
N
O
FF
G1
SW1
SW3
G4
MID
G3
G2
VIN1
VIN1
INTVCC
VOUT1
VIN1
VIN
INTVCC
EXTVCC
VIN1
VIN1
VIN
VOUT1
INTVCC
INTVCC
INTVCC
VIN
VOUT
VIN
VIN1
VIN
VIN1
VOUT
VOUT
FAULTB
BOOST2
FAULTB
BOOST2
SIZ
E
DA
TE
:
IC NO
.
RE
V.
SH
EE
T
OF
TI
TLE
:
APPROVAL
S
PCB DES.
AP
P E
NG
.
TE
CHN
O
LO
G
Y
Fax: (408)434-0507
Mi
lp
itas,
CA 95035
Phone:
(408)
432-
1900
1630 McCar
th
y
Bl
vd
.
LT
C C
on
fid
en
tia
l-F
or
C
us
to
m
er
U
se
O
nl
y
CUSTOMER NOTICE
LI
NEAR T
ECHNOL
OGY HAS MADE A BEST
EF
FO
RT
T
O
DESIGN
A
CI
RC
UI
T T
HA
T M
EE
TS
C
US
TO
M
ER
-S
UP
PL
IE
D
SP
EC
IF
IC
AT
IO
NS
;
HOW
EVER,
IT
REM
AINS T
HE CUST
OM
ER'S RESPONSIBIL
IT
Y T
O
VERIF
Y
PROPER
AN
D
REL
IABL
E OPERAT
ION
IN
THE
ACT
UAL
APPL
ICAT
ION. COMPONENT
SUBST
IT
UT
ION AND
ED
CIRCUIT
BOARD L
AYOUT
MAY
SIGNIF
ICANT
LY
AF
FE
CT
CIRCUIT
PERF
ORMANCE OR REL
IABIL
IT
Y. CONT
ACT
L
INEAR
TE
CHNOL
OGY APPL
ICAT
IONS ENGINEERING F
OR ASSIST
ANCE.
THIS CIRCUIT
IS PROPRIET
ARY
TO
L
INEAR
TE
CHNOL
OGY
AND
SCHE
MA
TI
C
SU
PP
LI
ED
F
OR
U
SE
W
IT
H L
IN
EA
R T
EC
HN
OL
OG
Y P
AR
TS
.
SCALE
= NO
NE
www.line
ar
.c
om
1
Monday, March 26, 2018
12
HIGH EFFICIENCY,CHARGE PUMP DC/DC CONVERTER
HZ
JL
N/A
LTC7820EUFD DEMO CIRCUIT 2543B
SIZ
E
DA
TE
:
IC NO
.
RE
V.
SH
EE
T
OF
TI
TLE
:
APPROVAL
S
PCB DES.
AP
P E
NG
.
TE
CHN
O
LO
G
Y
Fax: (408)434-0507
Mi
lp
itas,
CA 95035
Phone:
(408)
432-
1900
1630 McCar
th
y
Bl
vd
.
LT
C C
on
fid
en
tia
l-F
or
C
us
to
m
er
U
se
O
nl
y
CUSTOMER NOTICE
LI
NEAR T
ECHNOL
OGY HAS MADE A BEST
EF
FO
RT
T
O
DESIGN
A
CI
RC
UI
T T
HA
T M
EE
TS
C
US
TO
M
ER
-S
UP
PL
IE
D
SP
EC
IF
IC
AT
IO
NS
;
HOW
EVER,
IT
REM
AINS T
HE CUST
OM
ER'S RESPONSIBIL
IT
Y T
O
VERIF
Y
PROPER
AN
D
REL
IABL
E OPERAT
ION
IN
THE
ACT
UAL
APPL
ICAT
ION. COMPONENT
SUBST
IT
UT
ION AND
ED
CIRCUIT
BOARD L
AYOUT
MAY
SIGNIF
ICANT
LY
AF
FE
CT
CIRCUIT
PERF
ORMANCE OR REL
IABIL
IT
Y. CONT
ACT
L
INEAR
TE
CHNOL
OGY APPL
ICAT
IONS ENGINEERING F
OR ASSIST
ANCE.
THIS CIRCUIT
IS PROPRIET
ARY
TO
L
INEAR
TE
CHNOL
OGY
AND
SCHE
MA
TI
C
SU
PP
LI
ED
F
OR
U
SE
W
IT
H L
IN
EA
R T
EC
HN
OL
OG
Y P
AR
TS
.
SCALE
= NO
NE
www.line
ar
.c
om
1
Monday, March 26, 2018
12
HIGH EFFICIENCY,CHARGE PUMP DC/DC CONVERTER
HZ
JL
N/A
LTC7820EUFD DEMO CIRCUIT 2543B
SIZ
E
DA
TE
:
IC NO
.
RE
V.
SH
EE
T
OF
TI
TLE
:
APPROVAL
S
PCB DES.
AP
P E
NG
.
TE
CHN
O
LO
G
Y
Fax: (408)434-0507
Mi
lp
itas,
CA 95035
Phone:
(408)
432-
1900
1630 McCar
th
y
Bl
vd
.
LT
C C
on
fid
en
tia
l-F
or
C
us
to
m
er
U
se
O
nl
y
CUSTOMER NOTICE
LI
NEAR T
ECHNOL
OGY HAS MADE A BEST
EF
FO
RT
T
O
DESIGN
A
CI
RC
UI
T T
HA
T M
EE
TS
C
US
TO
M
ER
-S
UP
PL
IE
D
SP
EC
IF
IC
AT
IO
NS
;
HOW
EVER,
IT
REM
AINS T
HE CUST
OM
ER'S RESPONSIBIL
IT
Y T
O
VERIF
Y
PROPER
AN
D
REL
IABL
E OPERAT
ION
IN
THE
ACT
UAL
APPL
ICAT
ION. COMPONENT
SUBST
IT
UT
ION AND
ED
CIRCUIT
BOARD L
AYOUT
MAY
SIGNIF
ICANT
LY
AF
FE
CT
CIRCUIT
PERF
ORMANCE OR REL
IABIL
IT
Y. CONT
ACT
L
INEAR
TE
CHNOL
OGY APPL
ICAT
IONS ENGINEERING F
OR ASSIST
ANCE.
THIS CIRCUIT
IS PROPRIET
ARY
TO
L
INEAR
TE
CHNOL
OGY
AND
SCHE
MA
TI
C
SU
PP
LI
ED
F
OR
U
SE
W
IT
H L
IN
EA
R T
EC
HN
OL
OG
Y P
AR
TS
.
SCALE
= NO
NE
www.line
ar
.c
om
1
Monday, March 26, 2018
12
HIGH EFFICIENCY,CHARGE PUMP DC/DC CONVERTER
HZ
JL
N/A
LTC7820EUFD DEMO CIRCUIT 2543B
REVISION HIST
ORY
DE
SC
RI
PT
IO
N
DA
TE
APPRO
VE
D
ECO
REV
JL
PRODUCTION
2
3-29-17
__
REVISION HIST
ORY
DE
SC
RI
PT
IO
N
DA
TE
APPRO
VE
D
ECO
REV
JL
PRODUCTION
2
3-29-17
__
REVISION HIST
ORY
DE
SC
RI
PT
IO
N
DA
TE
APPRO
VE
D
ECO
REV
JL
PRODUCTION
2
3-29-17
__
C15 0.1uF
100V
J4
GND
C64
OPT
U1
LTC7820EUFD
NC
2
RUN
6
FAULT
9
PGOOD
7
TIMER
4
UV
8
27
EXTVC
C
11
ISENSE-
28
G4
15
INT
VCC
12
SW3
16
G3
17
G2
21
HYS_PRGM
3
FREQ
5
BOOST3
18
BOOST2
22
VLOW
20
VLOW_SENSE
19
VHIG
H_SEN
SE
1
Vcc
14
SW1
25
G1
24
BOOST1
23
GND
29
NC
10
NC
13
NC
26
Q4
OPT
4
5
6
7
8
3
1
2
SW1
1
2
3
4
5
6
C23
C66
Q22
BSS123L
2
3
1
C36 OPT
1210
50V
D3
CMDSH-4
2
1
C6 4.7uF
16V 0805
C71
+
C127 OPT
100V
C28 2.2uF
0805
50V
R10
0
Q1
BSC027N06LS5
4
5
6
7
8
3
1
2
R1 1k
1%
D6
NRVTSAF5100
C31
R36 OPT
0805
C19
R20
OPT
1%
R18 100K
1%
E1
VIN
RS1
0.005
2010
Q8
OPT
4
5
6
7
8
3
1
2
C16
OPT
D10
CMHZ5236B
R5
0
C67
10uF
1210
C2 2.2uF
1210
100V
C59 2.2uF
1210
100V
C24
R31 100
E6
RUN
C73 10uF
1210
50V
C72
Q7
BSC032N04LS
4
5
6
7
8
3
1
2
E12
VO_SNS-
C14
1210
C4
0.1uF
100V
R60
OPT
R17 10K
1%
C34
R8
OPT
1%
D9
CMHZ5236B
C8
0.22uF
R11 OPT
Q2
OPT
4
5
6
7
8
3
1
2
C68
J3
VOUT
C10 OPT
0805
R32 0
R7
1k
1%
C60
OPT
1210
D2
CMDSH-4
2
1
C20
50V
C32
C7
4.7uF
25V 0805
E2
GND
Q6
BSC032N04LS
4
5
6
7
8
3
1
2
R9 10K
1%
R21 OPT
0805
C13
Q11
SUD50N04
1
2
3
C56 2.2uF
1210
100V
RS2
0
2010
R35
OPT
Q3
BSC032N04LS
4
5
6
7
8
3
1
2
C17 2.2uF
0805
50V
C61
C12
C74 10uF
1210
50V
R2 2.2
C11
OPT
R13 10K
1%
R19 OPT
0805
R12 OPT
C25
C35
E10
D1
CMDSH-4
2
1
C26
0.47uF
C69
OPT
1210
50V
+
C1
33uF 80V
C126
0.1uF
C29 10uF
1210
50V
R34
OPT
J2
GND
C62
C3 2.2uF
1210
100V
C18
R6 OPT
0805
C5
0.1uF
100V
C22
OPT
1210
50V
C65
50V
C27
1uF
C33
Q5 OPT
4
5
6
7
8
3
1
2
Q10
SUD50N04
1
2
3
R16 60.4K
1%
E7
FAULTB
C57 2.2uF
1210
100V
C70
C9
0.47uF
C58 2.2uF
1210
100V
E8
PGOOD
J1
VIN
C77 OPT
C63
C30
OPT
C21
10uF
1210