DC2134A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
APPROVED
DATE
__
2
PRODUCTION
CHARLIE Z.
3-27-14
VIN
E1
15V - 55V
C1
R38
VIN
E3
+
GND
D
E4
C3
56uF
63V
63HVH56M
+
C2
56uF
63V
63HVH56M
5.1
0805
C34
C33
C32
C29
OPT
1210
C23
C16
4.7uF
100V
1210
36
R1
100k
0.1uF
100V 0603
PVIN
R2
510k
SENSVIN
SENSTOP
RCBRT1
0.002
1W
2512
C22
OPT
7
6
D
INT_VCC
GND
U1
LTC4020EUHF
E2
9
SHDN
10
E5
INT_Vcc
34
C21
10uF
6.3V
0805
SHDN
VIN_REG
R4
51k
R3
OPT
STAT2
STAT1
BST1
BST2
D1
SBR0560S1
25
C40
0.22uF
0603
RNG/SS
SW1
SW2
R36
0
3K
38
32
ILIMIT
5 6 7 8
1
5 6 7 8
R24
0
4
M6
OPT
4
1 2 3
BG1
37
R22
M4
SiR664DP
5 6 7 8
5 6 7 8
SENSBOT
SENSGND
19
R37
26
0
17
5
4
R21
0
C12
0.033uF
BG2
TG2
VFB
CSP
33
31
NTC
24
MODE
INT_VCC
2 CC/CV
4 CC
6 LEAD-ACID
11
14
8
JP1
R14
10k
C4
100pF
16V
C5
0.22uF
0603
R13
100k
R17
OPT
0603
NTC
BGATE
1210
35V
1210
35V
1210
35V
TIMER
RT
Vc
ITH
SGND
SGND
PGND
SGND
3
29
35
39
C
GND
4
3 2 1
R23
0
RCBAT1
0.008
1W
2512
C11
4.7uF
6.3V
0603
22
R18
100
R35
21
1 2 3
C10
OPT
0603
4
E10
M1
Si7145DP
BAT
VBAT
E12
5 6 7 8
20
28
27
C26
OPT
1210
C7
OPT
0603
R15
36k
0603
R16
47k
0603
C9
OPT
0603
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
LT
HIGH POWER BUCK / BOOST
MULTI-CHEMISTRY BATTERY CHARGER
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
CHARLIE Z. TITLE: SCHEMATIC
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
GND
C8
47pF
0603
CUSTOMER NOTICE
NOTE: UNLESS OTHERWISE SPECIFIED
B
BAT
25.2V FLOAT
6.3A MAX
E11
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.
4
VOUT
21V - 28V
8A MAX
8 7 6 5
CSOUT
BAT
C17
+
220uF
35V
35HVH220M
E13
0
MODE
+ C15
220uF
35V
35HVH220M
R20
23
A
5
1210
35V
C38
C37
C36
C35
OPT
1210
R25
0
M8
OPT
R34
0
C6
6.8nF
0603
C13
OPT
0603
C28
10uF
4
FBG
CSN
1
3
5
R32
OPT
0603
M7
3 2 1 SiR422DP
E9
16
C27
10uF
GND
100
E17
C18
10uF
E15
R19
20
18
C14
10uF
M3
SiR422DP
8 7 6 5
C31
OPT
0603
1 2 3
R11
24.9k
1%
SGND
B
4
3 2 1
3 2 1
RCBRB1
0.002
1W
2512
VFBMIN
VFBMAX
D5
OPT
M5
OPT
4
1 2 3
C25
OPT
VOUT
E16
8 7 6 5
D6
B360A
L1
5.6uH
0
R9
226k
0603
1%
R10
24.9k
0.1%
E14
8 7 6 5
WURTH 7443556560
R7
20
R8
226k
0603
0.1%
VOUT
D7
OPT
4
1 2 3
4
C24
OPT
C20
0.22uF
25V
0603
M9
OPT
C30
OPT
0603
VOUT
R6
20
C19
0.22uF
25V
0603
R31
OPT 0603
M2
SiR664DP
VBAT
D4
GRN
R26
12
2
30
C39
0.22uF
0603
TG1
C
D3
RED
R27
3K
13
0603
15
D2
SBR0560S1
DATE:
IC NO.
REV.
LTC4020EUHF
2
DEMO CIRCUIT 2134A
Thursday, March 27, 2014
SHEET 1
1
OF 1
A
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