DC2088A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
DESCRIPTION
1
APPROVED
PRODUCTION
YI S.
DATE
2-13-13
D
D
R1
VDR
0
VIN
R28
17.8K
SMOD#
2
4
3
VDRV
5
41
CGND
GND
PHASE
1
C22
VSWH
VSWH
VSWH
PGND
PGND
21
+
C53
470uF
+
C54
470uF
+
+
C18
C19
470uF 470uF
+
C20
OPT
C21
OPT
R10
30
1W
J4
0.22uF
GND
C
C47
100uF
1210
11
GPIO1
GPIO0
14
15
13
12
PGND
34
GND
13
GPIO1B
SGND AND PGND
CONNECTED AT
A SINGLE NODE
NEAR U2
R30
C43
100uF
1210
C46
100uF
1210
C45
100uF
1210
C44
100uF
R11
R21
R12
R62
0
OPT
0
OPT
E4
E6
19
20
0
1
3
2
VCIN
VDRV
4
R63
OPT
BG1
PWM
VIN
DISB#
VIN
NC
VIN
CGND
VSWH
GL
PGND
VSWH
PGND
VSWH
U3
PGND
VSWH
FDMF6823A
PGND
VSWH
PGND
VSWH
21
WP
18
GPIO0B
VIN
C30
1uF
SMOD#
27
16
R29 OPT
40
39
38
GPIO0B
R16
0
37
36
L2
35
0.16uH
34
33
32
R27
825
R25
825
C36
1uF
C31
100uF
1210
C32
100uF
1210
C33
100uF
1210
C34
100uF
1210
C35
100uF
1210
C49
100uF
1210
C51
100uF
1210
C52
100uF
1210
C50
100uF
1210
C48
100uF
1210
B
31
C37
0.22uF
VDD25
R31 16.2k
+
VOUT-
VSWH
VSWH
VSWH
VTRIM1_CFG
VTRIM0_CFG
VOUT1_CFG
4
R15
10
PGND
GPIO1B
3
17
ADDRESS: 0X4B
R26 OPT
BG1
12
41
18
B
C15
100uF
1210
31
43
29
30
ISNS1-
C26
100nF
C29
22uF
1210
28
ISNS1+
FREQ_CFG
32
BOOT
ASEL
C28
22uF
1210
29
PGND
BG1
VOUT0_CFG
R66
0
C14
100uF
1210
VDR
C27
1uF
16V
27
SC
31
R23
20K
GPIO0B
0
CGND
GND
SW1
VSENSE1
ALERTB
R24 10k
1uF
C17
100uF
1210
VIN
30
PGND
WP
21
VDD25
R22 10k
R9
825
C13
100uF
1210
VOUT+
5
41
TG1
VOUT0_CFG
VDD33
R8
825
C12
100uF
1210
43
29
30
25
22
33
RUN0
VTRIM_CFG
SDA
FREQ_CFG
SHARE_CLOCK
R20 10k
32
C16
VSNSN
26
17
33
2
6
16
R19
10K
SCL
VOUT
0.16uH
34
VSNSP
R13
20
R18 10k
J3
L1
35
RUN1
19
R17
0
24
VOUT
VOUT
36
1
7
SHARE_CLOCK
GPIO0B
37
7
TSNS0
BOOST1
23
WP
VDD33
0
BG0
GH
RUN
VSENSE0-
6
PHASE
14
VSENSE0+
TSNS1
36
PGND
15
ISNS0ITH0
39
PGND
C25
10nF
Q1
R14
6.81K
ITH1
37
PGND
C24
100pF
40
BG0
ISNS0+
VSWH
25
5
28
ALERT
VSWH
PGND
R2
38
VSWH
FDMF6823A
PGND
24
26
ITH
C23
1nF
SW0
U2
LTC3880EUJ
PGND
10
9
42
8
ALERTB
SYNC
20
40
39
VSWH
U1
VIN
VIN
VIN
NC
11
BOOST0
38
PGND
PGND
8
SYNC_A
TG0
VSWH
PGND
C
SDA
19
VDD33
10
SDA
SCL
VDD25
9
SCL
VIN
35
18
INTVCC
R7
10k
17
VDD33
GL
PGND
28
VDD25
E2
GND
VSWH
PGND
16
27
15
CGND
PGND
C11
1uF
VIN
26
C10
1uF
GND
NC
PGND
VDD33
14
PWM
DISB#
VIN
PGND
C9
100nF
R5
OPT
BG0
VIN
24
VDD25
C5
1uF
VIN
PGND
13
23
J2
12
C6
10uF
1
VDD33
C8
+ 330uF
16V
SVP
22
C7
+ 330uF
16V
SVP
23
R6
VIN
7V-14V
22
11
VIN
J1
6
7
10
9
42
8
INTVCC
VIN
PGND
E1
VIN
VIN
VIN
NC
INTVCC
R3
10
BOOT
C3
100nF
GH
C2
22uF
1210
R4
OPT
25
C1
22uF
1210
C4
1uF
16V
VCIN
VDR
FREQ_CFG
R32 17.4k
VOUT_CFG
R33 24.9k
R34 4.32k
R35 OPT
VTRIM_CFG
R36 0
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. INSTALL SHUNTS AS SHOWN.
A
A
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
HZ
YI S.
TITLE: SCHEMATIC
HIGH DENSITY DC / DC CONVERTER WITH POWER SYSTEM MANAGEMENT
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
REV.
LTC3880EUJ
1
DEMO CIRCUIT 2088A
Monday, May 20, 2013
1
SHEET 1
OF 2
5
4
3
2
1
ALERTB
VOUT
Q3
J5
1
3
E11
4
PULSE IN
R39
D1
IOUT
TST
1
C39
1uF
0805
R41
0.01
2512
GREEN
3
10K
E12
GND
TP0101K
Q4
GPIO0B
10K
J7
1
2
3
R38
ALERT
R40
15.8K
D2
2
3
4
5
GPIO0B
1
Q5
2N7002A
NOTE:
PULSE OUT
10mV / AMP
RED
R42
127
2
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
DO NOT EXCEED 5% DUTY CYCLE!
1
2
3
4
5
6
7
8
9
10
11
12
1
ALERTB
VIN
1
3V3
J6
D
R37
200
2
3
4
5
C38
2.2uF
0805
2
3
Q2
RJK0305DPB
+5V
+5V
VDD33
TP0101K
3V3
VOUT
5
D
2
VOUT
DYNAMIC LOAD CIRCUIT
SCL
SDA
TO DC1613A
VIN
VIN
VIN
SDA
EESCL
5
EESDA
COUT2
10uF
3
E16
1206
11
SHDN2
VOUT1
VOUT2
VOUT1
VOUT2
OFF
7
6
CBYP1
0.01uF
GND
BYP1
BYP2
GPIO0B
COUT1
10uF
1206
CBYP2
0.01uF
1
1
12
VIN2
VIN2
13
14
VIN1
SHDN1
C
ON
2
R47
OPT
VDD33
8
RUN
24LC025-I/ST
R48
10K
R49
6.19K
R50
3.4K
16
ADJ2
2
R52
2K
ADJ1
SW
RUN
9
1
VSS
7
6
3
JP2
LED
10
ON
2
R53
2K
R51
10
OFF
3
SCL
4
E15
C55 VDR
0.1uF
GND
A2
OFF
GND
WP
R46
4.99K
AUXVCC
5
4
A1
8
15
R44
100K
+5V
17
3
VCC
2
NC
2
A0
C40
1uF
U5
LT3029IMSE
3
R45
4.99K
U4
1
ON
VDR
2
JP1
EXT
DRIVER
D3
1
100nF
VIN1
R43
100K
C41
C
1
VIN
C42
10nF
B
B
J8
RIGHT
ANGLE
HEADER
GND
SCL
SDA
GPIO
RUN
SHARE_CLK
SYNC
DNI
DNI
DNI
J9
1
R54 0
1
2
R55 0
2
3
R56 0
3
4
R57 0
4
5
R58 0
5
6
R59 0
6
7
R60 0
7
8
8
9
9
10
10
RIGHT
ANGLE
SOCKET
GND
SCL
SDA
GPIO
RUN
SHARE_CLK
SYNC
DNI
DNI
DNI
CUSTOMER NOTICE
A
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
MILL MAXX
803-43-008-20-001000
MILL MAXX
802-40-008-20-001000
SCL SDA GPIO0B RUN
SHARE_CLK SYNC
APPROVALS
PCB DES.
HZ
APP ENG.
YI S.
TECHNOLOGY
TITLE: SCHEMATIC
HIGH DENSITY DC / DC CONVERTER WITH POWER SYSTEM MANAGEMENT
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
N/A
SCALE = NONE
DATE:
IC NO.
REV.
LTC3880EUJ
1
DEMO CIRCUIT 2088A
Monday, May 20, 2013
SHEET 2
1
OF 2
A
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