11
DEMO MANUAL DC2787A
Rev. 0
SCHEMATIC DIAGRAM
5
4
3
2
1
D
C
B
A
SER2011-202MLD
INTVCC2
INTVCC2
INTVCC2 EXTVCC
INTVCC2
VOUT
VIN
INTVCC2
VIN
VIN VIN
VOUTA
CLKOUT1
VFB
TRACK/SS
ITH
RUN
CLKOUT2
FAULT
PGOOD
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCBDES.
APPENG.
Phone:1‐408‐432‐1900
Milpitas,CA95035
1630McCarthyBlvd.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM:
PCAASS'Y:
www.analog.com
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCBDES.
APPENG.
Phone:1‐408‐432‐1900
Milpitas,CA95035
1630McCarthyBlvd.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM:
PCAASS'Y:
www.analog.com
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCBDES.
APPENG.
Phone:1‐408‐432‐1900
Milpitas,CA95035
1630McCarthyBlvd.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM:
PCAASS'Y:
www.analog.com
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
C127
C132
R40 0
C290
OPT
C147
C106
0.22uF
C122
C139
10uF
100V
1210
C292
OPT
C86
2.2uF
1210
100V
C125
10uF
100V
1210
C128
R255
0
C95
0.1uF
D6
CMDSH-4E
2 1
C107
0.1uF
C111
10uF
100V
1210
C143
C293
OPT
R37
100k
Q8
BSC014N04LSI
4
5
6
7
8
3
1
2
U2
LTC7821EUH
MODE/PLLIN
1
CLKOUT
2
RUN
3
FAULTB
4
PGOOD
5
TIMER
6
TRACK/SS
7
EXT_REF
8
ISENSE+
15
EXTVCC
16
ISENSE-
14
PGND
17
BG2
18
INTVCC
19
SW3
20
TG2
21
BG1
24
HYS_PRGM
9
ITH
10
FREQ
11
TEMP
12
VFB
13
BOOST3
22
BOOST2
23
MID
25
MIDSENSE
26
VINSENSE
27
VIN
28
SW1
29
TG1
30
BOOST1
31
NC
32
SGND
33
Q11
BSZ070N08LS5
4
5
6
7
8
3
1
2
C123
R273 0 C102
0.47uF
C287
0.1uF
C133
1210
C83
10uF
100V
1210
Q28
OPT
4
5
6
7
8
3
1
2
R43
6.81k
0805
Q29
OPT
4
5
6
7
8
3
1
2
R253
OPT
C129
C144
10uF
100V
1210
C140
10uF
100V
1210
R36
1
C124
C82
10uF
100V
1210
R274 0
Q9
BSC032N04LS
4
5
6
7
8
3
1
2
C113
R256
0
R34
OPT
C257
4.7uF
R48
53.6k
1%
RN2
OPT
t°
C87
2.2uF
1210
100V
C258 4.7uF
0805
C120 2.2uF
C130
10uF
D4
CMDSH-4E
21
Q26
OPT
4
5
6
7
8
3
1
2
C110
27pF
C145
C141
R35
0
C114
R41
0
R272
10k
1%
R251
OPT
C91
0.1uF
R244
60.4k
1%
R42 1k
C96
1uF
Q22A1
OPT
5
6
7
4
2
3
8
1
C126
10uF
100V
1210
C88
2.2uF
1210
100V
R49
10k
1%
Q27
OPT
4
5
6
7
8
3
1
2
Q10
BSC032N04LS
4
5
6
7
8
3
1
2
C131
100V
Q11A
OPT
5
6
7
4
2
3
8
1
C85
2.2uF
1210
100V
R245
4.32k
1%
R228 0
R252
0
R254
0
C146
C142
C108
0.22uF
R234
OPT
C115
R38
1k
C121
10uF
100V
1210
D5
CMDSH-4E
2 1
L2 2uH
C100
10uF
100V
1210
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