DC2065A - Schematic

5
4
3
2
VIN
E1
VIN
VIN
+ CIN2
2.2V - 5.5V
47uF
16V
E2
D
7343
CIN1
22uF
10V
1206
CIN3
OPT
1206
+ CIN4
CIN5
OPT
1206
OPT
7343
R13
10
1%
GND
E3
D
E12
R22
SVIN
0
C8
OPT
1210
ON
2
SDA
7
ALERT
5
WP
4
RUN_MSTR26
JP1
SYNC
SVIN
6
1
2
SYNC
25
R29
0
3
4
FCM
JP2
E6
R3
OPT
1%
R2
0
C6
OPT
R1
1k
1%
R17
OPT
DAOUT
33
FB
35
ITH
34
SS
30
REF
36
37
C2
4.7nF
R4
5.49k
1%
C1
24
VIN
SCL
SW
SDA
LTC3815EUFE
SW
ALERT
SW
WP
SW
RUN_MSTR
SW
MODE/SYNC
SW
RT
SW
CLKOUT
SW
VCC_SENSE
DAOUT
VSS_SENSE
FB
CSLEW
ITH
RUN_STBY
TRK/SS
MARGIN
REF
NC
PGLIM
47pF
E5
17
SW
PGFD
R19
0
L1
0.33uH
COILCRAFT
VOUT
XAL6030-331ME
U1
R5
OPT
R14
OPT
PVIN
16
PGOOD
2
CLKOUT
9
1
SVIN
MODE
DCM
8
3
SYNC
SYNC
29
2
JP5
3
OFF
E4
OFF
SCL
PGND
ON
1
PGOOD
SGND
SVIN
RUN_MSTR
1
1uF
NC
10
E8
SW
VOUT
11
13
COUT1
100uF
COUT2
100uF
COUT3
10uF
COUT4
10uF
14
1210
1210
1206
1206
6.3V
18
19
6.3V
6.3V
OPT
7343
E9
GND
21
R20
22
10
C
23
32
VSENSE+
31
VSENSE-
28
C4
VSENSE+
RUN_STBY
51pF
27
1
3
3
12
ON
2
RUN_STBY
SW
OFF
JP3
RUN_STBY
20
SVIN
MARGIN
R6
0
HIGH
1
2
NOM
3
4
LOW
5
6
JP4
SVIN
TRACK
6.3V
VOUT
6A MAX
+ COUT5
R7
10
38
WP
R10
10k
1%
PVIN
ALERT
RUN_MSTR
R9
10k
1%
ASEL
R8
10k
1%
39
SDA
R12
100k
1%
PVIN
SCL
15
SVIN
PGOOD
B
SVIN
C7
PGOOD
C
1
B
C3
10nF
VOUT SEL
E13
JP6 R11 10k 0.1%
REF
C9
OPT
1210
E11
SGND
1.0V
JP7 R18 18K 0.1%
1.8V
JP8 R21 OPT
ADJ
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
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
TECHNOLOGY
TITLE: SCHEMATIC
MONOLITHIC SYNCHRONOUS STEP-DOWN
REGULATOR WITH PMBus INTERFACE
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
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
2
IC NO.
LTC3815EUFE
DEMO CIRCUIT 2065A
DATE: Friday, April 10, 2015
SHEET 1
1
REV.
2
OF 2
A
5
4
3
2
1
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
SDA
E14
SDA
D
SCL ALERT
E15
R26
E10
SYNC
D
OPT
SCL
R25
ALERT
RUN_STBY
OPT
3V3
E7
3V3_BIAS
R24
RUN_MSTR
OPT
J1
1
2
3
4
5
6
7
8
9
10
11
12
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
OPT
SCL
ALERT
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
TO DC1613A
C5
100nF
U2
2
3
4
VCC
A1
WP
A2
SCL
8 AUXP
7
R15
4.99k
1%
R16
4.99k
1%
J3
DEMO HEADER (M)
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
J4
C
DEMO HEADER (F)
3V3
3V3
6 EESCL
R27
200
5 EESDA
VSS SDA
24LC025-I/ST
3
B
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CUSTOMER NOTICE
R28
127
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
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
TECHNOLOGY
5
4
3
A
MONOLITHIC SYNCHRONOUS STEP-DOWN
REGULATOR WITH PMBus INTERFACE
IC NO.
LTC3815EUFE
DEMO CIRCUIT 2065A
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
TITLE: SCHEMATIC
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
Q1
SI2365EDS1-GE3
D2
RED
Q2
2N7002
1
1
B
D1
GREEN
2
PGOOD
ALERT
3
C
R23
AUXP
SDA
DATE: Thursday, April 09, 2015
2
SHEET 2
1
REV.
2
OF 2
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