13
DEMO MANUAL DC2787A
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SCHEMATIC DIAGRAM
D
C
B
A
SER2011-202MLD
+8V BIAS
DO NOT EXCEED
DYNAMIC LOAD CIRCUIT
2% DUTY CYCLE MAX.
VIN
VIN
INTVCC4 EXTVCC
VIN
INTVCC4
INTVCC4
INTVCC4
VOUT
INTVCC4
+8V
EXTVCC
VIN
VOUT
VOUTA
CLKOUT3
RUN
TRACK/SS
ITH
VFB
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
C138
R264
0
C185
10uF
100V
1210
R267
0
R74
OPT
Q37
OPT
4
5
6
7
8
3
1
2
C136
C209
2.2uF
1210
100V
C291
OPT
C188
C180
100V
J6
IOSTEP
C210
2.2uF
1210
100V
R68
53.6k
1%
R59 1k
R235
OPT
C157 2.2uF
Q14
BSC014N04LSI
4
5
6
7
8
3
1
2
C149
1210
E9
GND
C47
2.2uF
1210
J5
VOUT
R278 0
C116
RN4
OPT
t°
R268
0
Q11A1
OPT
5
6
7
4
2
3
8
1
C164
0.47uF
R50 0
R57
100k
Q36
OPT
4
5
6
7
8
3
1
2
C179
10uF
C112
C49
2.2uF
1210
R259
60.4k
1%
R58
1k
C162
1uF
C167
0.22uF
C117
C150
R265
OPT
Q22A3
OPT
5
6
7
4
2
3
8
1
R26
182k
1%
R56
1
R248
4.32k
1%
C11
10uF
100V
1210
C50
1uF
C288
0.1uF
C118
10uF
100V
1210
C181
R60
10k
1%
R30
0.2
2010
1%
C294
OPT
R27
20k
C51
OPT
R71
6.81k
0805
R51
0
C101
10uF
100V
1210
C184
10uF
100V
1210
C175
0.1uF
C135
R279 0
Q35
OPT
4
5
6
7
8
3
1
2
R263
OPT
U4
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
C52
22uF
1210
Q20
SUD50N04-8m8P
2
1
3
C54
0.047uF
E12
CLKOUT4
R247
0.2
2010
1%
C166
0.1uF
L4 2uH
C165
0.22uF
C295
OPT
U7
LTC3630AEMSE
SW
1
VIN
3
FBO
12
VPRG1
7
VPRG2
6
GND
8
VFB
9
SS
10
ISET
11
GND
14
RUN
5
GND
16
GND
17
C176
10uF
100V
1210
C178
R47
0
C174
0.1uF
C182
D16
CMDSH-4E
2 1
C53
22uF
1210
Q21
SUD50N04-8m8P
2
1
3
C134
10uF
100V
1210
Q34
OPT
4
5
6
7
8
3
1
2
C183
D15
CMDSH-4E
2 1
R231 0
C216
10uF
100V
1210
C261
4.7uF
Q15
BSC032N04LS
4
5
6
7
8
3
1
2
L5 68uH
LPS6225-683MRB
1 2
E8
IO_CLK
Q13
BSZ070N08LS5
4
5
6
7
8
3
1
2
C177
JP2
ON
OFF
BIAS1
1
3
2
C262 4.7uF
0805
C148
10uF
100V
1210
R266
0
R29
80.6k
1%
R24
0
C156
27pF
C119
2.2uF
1210
100V
C186
E15
GND
Q16
BSC032N04LS
4
5
6
7
8
3
1
2
C137
C187
D14
CMDSH-4E
21
R28
10k
1%
C109
2.2uF
1210
100V
C55
220pF
R277
10k
1%
CLKOUT4
To Next Page
Loading...
Need help?
General
