DC1894B - Schematic

3
R29 LED5
475
1%
B
R41
33
2512
R25 LED1
475
1%
R37
33
2512
Q4
RQJ0303PGDQALT
18
19
21
S4
R51
110
2
2
JP2
JP1
1
0
Q3
RQJ0303PGDQALT
1
2
1
2
JP3
2
3
JP4
4
A0
VCC
A1
WP
S3
2
A2
SCL
VSS
SDA
Q2
RQJ0303PGDQALT
R14 3.3k
R1 100 1%
2
V+
IHP
C12
IHM
S12
ICMP
C11
IBIAS
S11
SDO
C10
SDI
22
23
24
C9
CSB(ILM)
S9
ISOMD
C8
WDT
S8
DRIVE
C7
VREG
S7
SWTEN
C6
VREF1
S6
VREF2
C5
GPIO5
S5
GPIO4
C4
VM
S4
NC
C3
GPIO3
S3
GPIO2
C2
GPIO1
S2
C0
C1
S1
48
47
D
8
6
5
46
1
3
44
5
43
7
42
9
41
11
40
13
39
38
37
Q13
CZT5551
R63
OPT
VIN
VCC
GND1
SCK
MISO
CS
MOSI
GND2
EESDA EEVCC
EESCK EEGND
GND3
NC
2
4
6
8
10
C
12
14
R73
OPT
R62
1M
36
35
R68 10k NTC
34
33
32
C17
1uF
C20
1uF
C21 R67
1uF 10k
C22
1uF
31
30
E8
29
28
27
26
25
E3
E7
C32
10nF
R69
22k
VREG
E6
LTC6804VB
GPIO5
GPIO4
R70
22k
C33
10nF
E5
E1
R71 R72
1M 1M
C34
10nF
WDT
U2
24AA01
SOT-23-5
E4
C35
10nF
S1
CUSTOMER NOTICE
C0
C36
10nF
NOTES: UNLESS OTHERWISE SPECIFIED,
1. ALL CAPACITORS AND RESISTORS ARE 0603.
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.
GPIO3
GPIO2
GPIO1
3
TECHNOLOGY
AK
JON M.
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
isoSPI 12-CELL BATTERY-STACK MONITOR
IC NO.
LTC6804IG-1
N/A
DEMO CIRCUIT 1894B
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
R58
4.99K
J2
SPI BOTTOM
R53 R52
1K 1K
45
R13 3.3k
R56 100 1%
R57
4.99K
C1
C1
OPT
0805
Q1
RQJ0303PGDQALT
S2
12-16-11
R55 1M
C2
C2
OPT
0805
DATE
JON M.
7
E2
R61 0
5
100nF
C3
C3
OPT
0805
APPROVED
U3
24LC025-I/ST
C19
SWTEN
3
C15
OPT
0805
ISOMD
C4
R2 100 1%
1
D2
BAT46W-7-F
17
20
S5
T1
TG110-AE050N5
R15 3.3k
3
A
15
16
R3 100 1%
1
R38
33
2512
14
C4
OPT
0805
2
3
R26 LED2
475
1%
13
C31
10nF
8
6
R16 3.3k
1
R39
33
2512
12
R5 100 1% C5
C5
2
OPT
Q5
0805
RQJ0303PGDQALT
2
3
R27 LED3
475
1%
11
C30
10nF
7
S10 SCK(ILP)
10
R4 100 1%
1
R40
33
2512
7
R17 3.3k
3
R28 LED4
475
1%
6
R18 3.3k
3
1
2
5
C29
10nF
3
4
1
2
Q6
RQJ0303PGDQALT
1
9
C6
C6
OPT
0805
DESCRIPTION
1ST PROTOTYPE
R54 1M
8
R19 3.3k
1
SDA VCC
Q7
RQJ0303PGDQALT
2
U1
LTC6804IG-1
4
C7
C7
OPT
0805
S7
REV
__
C18
OPT
1206
VSS
2
1%
C23
100nF
0805
100V
ECO
3
R20 3.3k
R7 100 1%
1
R66
OPT
1206
R50
110
3
C28
OPT
10nF
0805
9
5
1
Q8
RQJ0303PGDQALT
10
WP
2
C27
10nF
14 11
SCL
3
C13
100nF
100V
0805
R21 3.3k
R8 100 1% C8
C8
2
3
R42
33
2512
R49
100 1%
C9
C9
OPT
0805
S9
Q9
RQJ0303PGDQALT
R6 100 1%
R30 LED6
475
1%
R64
100
C26
10nF
15
2
1
R9 100 1%
1
R43
33
2512
C10
C10
OPT
0805
S10
Q10
RQJ0303PGDQALT
2
3
R31 LED7
475
1%
R10 100 1%
1
R44
33
2512
C14
OPT
0805
R22 3.3k
3
R32 LED8
475
1%
S11
R23 3.3k
2
1
C
CELL VOLTAGES
60V MAX
J1
16 CELL12
15 CELL11
14 CELL10
13 CELL9
12 CELL8
11 CELL7
10 CELL6
9 CELL5
8 CELL4
7 CELL3
6 CELL2
5 CELL1
4 CELL0
R45
33
2512
C25
10nF
16
1
1
2512
3
R33 LED9
475
1%
C11
OPT
0805
Q11
RQJ0303PGDQALT
R65
OPT
1206
1
2
3
R34 LED10 R46
475
33
1%
2512
C11
SHIELD
E10
3
3
R35 LED11 R47
475
33
1%
C16
OPT
1206
R24 3.3k
R11 100 1%
D
S12
C24
10nF
1
REVISION HISTORY
isoSPI A
J3
RJ45
1
Q12
RQJ0303PGDQALT
1
3
5
7
3
R48
33
2512
2
4
6
8
1
LED12
1
R36
475
1%
C12
C12
OPT
0805
2
1
3
5
7
3
R12 100 1%
3
2
2
4
6
8
isoSPI B
J4
RJ45
11
12
4
11
12
5
2
SCALE = NONE
DATE:
Friday, March 23, 2012
SHEET 1
1
REV.
1
OF 1
A
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