9
dc1697af
DEMO MANUAL DC1697A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
1
1
2
2
3
3
4
4
5
5
A
A
B
B
C
C
D
D
2. INSTALL SHUNTS AS SHOWN.
1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603.
NOTES: UNLESS OTHERWISE SPECIFIED
QUICK EVAL DEMO ONLY
HIGH VOLTAGE LINES
VPU
INTVCC
SCL
SDA/SDAI
/ALERT
/ALERT
INTVCC
VIN
VOUT
SIZE
DATE:
.V
E
R
.
O
N
CI
SHEET
O
F
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
4
DEMO CIRCUIT 1697A
10/26/2012, 06:09 PM
1
1
WIDE RANGE I2C POWER MONITOR
N/A
LTC2945CUD
KIM T.
MARK T.
SIZE
DATE:
.V
E
R
.
O
N
CI
SHEET
O
F
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
4
DEMO CIRCUIT 1697A
10/26/2012, 06:09 PM
1
1
WIDE RANGE I2C POWER MONITOR
N/A
LTC2945CUD
KIM T.
MARK T.
SIZE
DATE:
.V
E
R
.
O
N
CI
SHEET
O
F
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
4
DEMO CIRCUIT 1697A
10/26/2012, 06:09 PM
1
1
WIDE RANGE I2C POWER MONITOR
N/A
LTC2945CUD
KIM T.
MARK T.
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
MARK T.
PRODUCTION
__
21-
62-
01
4
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
MARK T.
PRODUCTION
__
21-
62-
01
4
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
R
EV
MARK T.
PRODUCTION
__
21-
62-
01
4
C3
0.1uF
C3
0.1uF
J1
MOLEX
87831-1420
TO DC590B
J1
MOLEX
87831-1420
TO DC590B
VUNREG
1
CS
6
GND
3
SCK/SCL
4
MISO
5
5V
2
SDA/MOSI
7
GND
8
EESDA
9
EEVCC
10
EESCL
11
EEGND
12
GND
13
NC
14
R4 (OPT)
0603
R4 (OPT)
0603
R7 5.1K
R7 5.1K
JP1
VIN
INTVCC
EXTVDD
VDD_SEL
JP1
VIN
INTVCC
EXTVDD
VDD_SEL
1
3
2
4
6
5
R5 (OPT)
0603
R5 (OPT)
0603
E14
ADIN
E14
ADIN
R6 5.1K
R6 5.1K
E4
GND
E4
GND
E12
VPU
E12
VPU
E7
SDAO
E7
SDAO
TP1
(OPT)
TP1
(OPT)
R10 3.3K
R10 3.3K
R8 5.1K
R8 5.1K
C1 0.1uF 100V 1206
C1 0.1uF 100V 1206
D2 GRN INTVCC
VLMC3101
D2 GRN INTVCC
VLMC3101
JP2
TIE
UNTIE
SDA
JP2
TIE
UNTIE
SDA
1
3
2
JP4
HI
FLOAT
LO
ADR1
JP4
HI
FLOAT
LO
ADR1
1
3
2
4
D3 RED ALERT
VLMS3000
D3 RED ALERT
VLMS3000
EXPOSED PAD
U1
LTC2945CUD
EXPOSED PAD
U1
LTC2945CUD
SENSE+
11
SENSE-
10
VDD
12
INTVCC
1
ADR0
3
ADR1
2
ALERT
9
SDAO
8
SDAI
7
ADIN
4
GND
5
SCL
6
EP
13
E6
EXTVDD
E6
EXTVDD
JP3
HI
FLOAT
LO
ADR0
JP3
HI
FLOAT
LO
ADR0
1
3
2
4
C4
0.1uF
C4
0.1uF
E11
SCL
E11
SCL
C2
1000pF
100V
C2
1000pF
100V
Q1 2N7002
Q1 2N7002
E13
GND
E13
GND
E1
VIN
0V - 80V
E1
VIN
0V - 80V
E2
GND
E2
GND
E9
SDAI
E9
SDAI
R1
0.020 1% 2010
R1
0.020 1% 2010
E8
INTVCC
E8
INTVCC
E10
GND
E10
GND
R3
10K
R3
10K
U2
24LC025-I/ST
U2
24LC025-I/ST
A0
1
A1
2
A2
3
VSS
4
VCC
8
WP
7
SCL
6
SDA
5
E5
ALERT
E5
ALERT
D1
SMAJ75A-13-F
D1
SMAJ75A-13-F
R9 3.3K
R9 3.3K
E3
VOUT
5A
E3
VOUT
5A
R2 51
R2 51