DC1129A - Schematic

5
4
3
RUN/SS
1
ON
2
JP1
3
OFF
2
1
R1
OPT
CSS
0.1UF
INTVCC
JP3
1.5V
R9
R10
60.4K 40.2K
E7
C5
47PF
JP4
1.8V
JP5
2.5V
R11
30.1K
R12
19.1K
C6
OPT
R8
137K
SGND
SGND
VON
PGOOD
VRNG
ITH
FCB
SGND
ION
SGND
VFB
EXTVCC
SGND
SGND
SGND
SGND
PVIN
SW
PGND
PVIN
PVIN
PVIN
PVIN
PVIN
SW
SW
SW
SW
SW
SW
SW
SW
PGND
PGND
PGND
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SGND
JP2
1.2V
R7
60.4K
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
U1
LTC3610EWP
B
EXTVCC
E2
C7
OPT
CIN3
150UF
35V
SANYO
35ME150WXV
CIN4
CIN5
1210
OPT
TOKO
FDV0630
J2
E3 PGND
VOUT
CO1
CO2 +
100UF
6.3V
1812
CO3
CO4
330UF
6.3V
7343
OPT
E5
VOUT
12A MAX.
J3
CO6
CO5
22UF
6.3V
0805
E6
Q1
SUD50N03
VOUT
C10
4.7UF
6.3V
C9
1UF
35V
R16
10K
J5
VOUT
B
J6
IOSTEP
R5
0.005
2512
E8
IOSTEP
CLK
DYNAMIC LOAD CIRCUIT
NOTES: UNLESS OTHERWISE SPECIFIED
A
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE 0603.
2. INSTALL SHUNT ON JP1 PINS 1 AND 2, JP3.
CUSTOMER NOTICE
CONTRACT NO.
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
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
DRAWN:
CHECKED:
APPROVED:
TECHNOLOGY
KIM T.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
A
HIGH INPUT VOLTAGE AND HIGH CURRENT DENSITY STEP-DOWN CONVERTER
ENGINEER:
MANJING X. SIZE
DESIGNER:
C
J4 PGND
1
C8
4.7UF
16V
0805
CIN6
CIN7
1206
OPT
L1
0.47UH
R13
1
INTVCC
EXTVCC
CIN1 +
CIN2
10UF
35V
1206
3
C3 100PF
C4
R6
1000PF 7.5K
VOUT
SELECT
R3
11K
VOUT
PGOOD
C
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
C2
0.01UF
VIN
E1 4.5V-24V
VIN
SGND
E4
J1
R14
2
RUN/SS
R2
OPT
R4
100K
PGOOD
3
2
1
D
SW
SGND
SGND
RUN/SS
BOOST
NC
NC
SW
PVIN
PVIN
PVIN
PVIN
PVIN
PVIN
PVIN
PVIN
PVIN
INTVCC
FCB
INTVCC
SGND
SGND
SVIN
SVIN
SVIN
INTVCC
INTVCC INTVCC
SW
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
DCM
JP6
CCM
D1
C1
CMDSH-3
0.22UF 16V
2
1 BOOST
2
D
DWG NO.
A
DC1129A-1 * LTC3610EWP
Thursday, August 09, 2007
DATE:
2
SHEET
1
REV
A-1
1 OF 1
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