DC1403A - Schematic

5
4
3
2
1
REVISION HISTORY
INPUT MODE
1
ECO
REV
SINGLE
DESCRIPTION
3
DATE
IC Change
APPROVED
02/23/11
EDWIN L.
2
CASCADE
3
VOUT1
4
DUAL
JP1
VIN2
VIN1
D
D
TP1
TP16
GND
VOUT2
R1
1k
1%
VOUT1
D6
CMDSH-4E
OPT
LT3692AEFE
TP3
35
SHDN1
6
D7
OPT
38
C4 0.47uF
0603
D2
D1
SHDN1
D3
CMDSH-4E
OPT
BST1
BST2
SW1
SW2
SHDN2
20
D4
C5 0.47uF
0603
D5
CMDSH-4E
9
R7
100K
R5
42.2K
1%
C10
8
22pF
7
34
33
TP9
R9 8.06K 1%
CMPO1
32
SS1
30
TP11
C12
R11
R13 30k 1%
C14 680pF
0.1uF
27
100K 1%
1
3
C16 33pF
5
10
TP13
B
SYNC
15
C25
10nF
OPT
R15
10.2k
1%
R16
20k
1%
IND1
IND2
VOUT1
VOUT2
FB1
FB2
CMPI1
CMPI2
CMPO1
CMPO2
SS1
SS2
ILIM1
ILIM2
VC1
VC2
RT/SYNC
CLKOUT
DIV
TJ
NC
NC
NC
NC
NC
NC
NC
NC
NC
PGND
4
11
C11
12
22pF
BEAD
FBMJ3216HS800
OPT
L3
R8
100K
13
VOUT2
C8
100uF
10V
1210
C9
10uF
16V
OPT
0805
3.3V/3A
TP8
24
GND
25
R10 8.06K 1%
TP10
26
CMPO2
29
SS2
28
R12
100K 1%
R14 30k 1%
37
C13
C15 680pF
TP12
0.1uF
31
C17 33pF
21
19
TP14
R18
17
CLKOUT
OPT
B
TEMP
C24
R17
40.2k
1%
22uH
IHLP4040DZ-01
OPT
C20
2.2uF
50V
OPT
1210
+ C18
22uF
50V
OPT
OPTIONAL CIRCUIT
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.
A
NOTES: UNLESS OTHERWISE SPECIFIED,
1. ALL CAPACITORS AND RESISTORS ARE 0402.
[2] SEE QUICK START GUIDE FOR DETAILS ON JP1 SETTING
AND INPUT VOLTAGE IMPLEMENTATION ORDER.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
R6
24.9K
1%
VIN1
FB1
C19
0.01uF
OPT
0603
TP6
VOUT2
10nF
(400kHz)
VIN1
NC
C
18
16
TP15
39
2
TP7
R2
1k
1%
B340A
VOUT1
GND
TP17
D8
OPT
L2
4.7uH
TP5
C7
100uF
10V
1210
7V - 36V
14
L1
6.8uH
C
C6
10uF
16V
OPT
0805
+ C21
22uF
50V
23
B340A
5V/3A
VIN2
TP4
SHDN2
CMDSH-4E
VOUT1
C3
4.7uF
50V
1210
[2]
VIN2
GND
U1
22
TP2
VIN1
VIN2
C2
4.7uF
50V
1210
36
+ C1
22uF
50V
7V - 36V
VIN1
[2]
VIN1
4
3
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
MI
EDWIN L.
TITLE: SCHEMATIC
DUAL MONOLITHIC STEP-DOWN
CONVERTER
SIZE
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
IC NO.
LT3692AEFE
REV.
DEMO CIRCUIT 1403A
DATE: Wednesday, February 23, 2011
SHEET 1
1
3
OF 1
A
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