DC2341A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
APPROVED
PRODUCTION
2
E1
VIN
DESCRIPTION
DATE
Charlie
9-2-15
VIN
J1
VIN
CIN1 +
180uF
25V
CIN2
OPT
25V
J2
GND
E2
CIN3
OPT
25V
+
CIN4
22uF
25V
1210
CIN5
22uF
25V
1210
D
CIN6
10uF
25V
1206
GND
R2
OPT
D5
B6
RUN
INTVCC
D1
R10
100k
ILIM
CLKOUT
C7
220nF
R7
OPT
R14
OPT
COUT1
330uF
2.5V
7343
20A MAX
+
COUT4
330uF
2.5V
7343
J4
GND
C4
R8
OPT
0
R12
10
R9
10
R15 OPT
C
E4
VO_SNS+
A2
A4
R17
0
A6
VO_SNS-
VOUT
C8
OPT
E5
R18
OPT
C9
OPT
TEMPERATURE COMPENSATION
NETWORK FOR DCR SENSING
ITEMP
R25
OPT
C13
2
C12
120pF
4.7uF
6.3V
RN1
R27
OPT
OPT
OPT
B
1
PGOOD
+
A3
R32
6.65k
1%
A5
R24
6.04k
1%
COUT3
100uF
6.3V
1210
EXTVCC
LOAD STEP CIRCUIT
+
COUT5
OPT
7343
+
3
1
SUD50N03-10CP-E3
Q1
C17
1
1uF
C16
100uF
6.3V
1210
J5
VOUT
E11
CUSTOMER NOTICE
2
VOUT
VOUT
C15
100uF
6.3V
1210
E13
COUT6 IOUT
STEP
OPT
7343
2
3
4
5
E10
A
C5
220nF
COUT2
100uF
6.3V
1210
R5
3.09k
1%
C11
2.2nF
C14
EXTVCC
ITH
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
R22
OPT
VFB
R4
619
1%
INTVCC
CMDSH-3
R19
10k
1%
J4
J5
J6
J7
H4
H5
H6
H7
G4
G5
G6
B5
SGND
SGND
SGND
SGND
ITEMP
R23
124k
E9
B1
CLKOUT
R20 0
C10
0.1uF
10V
DIFFOUT
EXTVCC
D6
DIFFN
MODE/PLLIN
C4
C5
B3
B4
E7
ITEMP
PGOOD
FREQ
MODE/PLLIN
JP2
B2
LTC7130
TRK/SS
PGOOD
SW
SW
SW
SW
SW
SW
SW
SW
SW
A7
SNS-
U1
B7
C6
CLKOUT C3
R3
C1
INTVCC
DIFFP
3
4
SNSA+
SNSD+
PGOOD C7
2
BURST
CCM
C2
RUN
D7
1
P.S.
R16 0
MODE/PLLIN
B
F1
L1 0.25uH
C2
0.22uF
25V
D1
2.7
R13
1k
1%
C
E6
R11
3.01k
1%
J3 VOUT
1.5V
G1
G2
G3
H1
H2
H3
J1
J2
J3
NC2
A1
BOOST
EXTVCC
R6
OPT
C6
4.7uF
6.3V
E8
D2
D3
D4
E1
E2
E3
F2
F3
SVIN
TK/SS
C3
OPT
CLKOUT
NC1
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
C1
1uF
25V
2
E3
VOUT
DCR=0.37mOHM
SW
VIN
RUN
ON
OFF
1
3
JP1
744308025
2.2
F4
F5
F6
F7
E4
E5
E6
E7
G7
R1
GND
GND
GND
GND
GND
GND
GND
GND
4.5V - 20V
D
R28
0.010
2512
R29
OPT
2512
R30
10K
IOSTEP CLK
E12
CONTRACT NO.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
APPROVALS
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. HZ
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
Charlie
ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
GND
TECHNOLOGY
TITLE: SCHEMATIC
HIGH EFFICIENCY STEP-DOWN CONVERTER
WITH INTEGRATED FETS AND VERY LOW DCR INDUCTOR
SIZE
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
DATE:
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
IC NO.
REV
LTC7130EY
2
DC2341A
SHEET
Wednesday, December 02, 2015
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