5
dc2341af
DEMO MANUAL DC2341A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
744308025
DCR=0.37mOHM
1210
1210
N/A
VOUT
LOAD STEP CIRCUIT
IOUT
IOSTEP CLK
2512
2512
1210
1210
1206
1210
1210
TEMPERATURE COMPENSATION NETWORK FOR DCR SENSING
STEP
20A MAX
SW
PGOOD
CLKOUT
ITEMP
EXTVCC
CLKOUT
ITEMP
PGOOD
EXTVCC
VOUT
INTVCC
VOUT
INTVCC
VIN
VOUT
VOUT
VIN
SIZE
DATE:
IC NO.
REV
SHEET
OF
TITLE:
CONTRACT NO.
APPROVALS
PCB DES.
ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
Wednesday, December 02, 2015
1
1
HIGH EFFICIENCY STEP-DOWN CONVERTER
HZ
Charlie
LTC7130EY DC2341A
WITH INTEGRATED FETS AND VERY LOW DCR INDUCTOR
SIZE
DATE:
IC NO.
REV
SHEET
OF
TITLE:
CONTRACT NO.
APPROVALS
PCB DES.
ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
Wednesday, December 02, 2015
1
1
HIGH EFFICIENCY STEP-DOWN CONVERTER
HZ
Charlie
LTC7130EY DC2341A
WITH INTEGRATED FETS AND VERY LOW DCR INDUCTOR
SIZE
DATE:
IC NO.
REV
SHEET
OF
TITLE:
CONTRACT NO.
APPROVALS
PCB DES.
ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
Wednesday, December 02, 2015
1
1
HIGH EFFICIENCY STEP-DOWN CONVERTER
HZ
Charlie
LTC7130EY DC2341A
WITH INTEGRATED FETS AND VERY LOW DCR INDUCTOR
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
9-2-15
PRODUCTION
2
Charlie
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
9-2-15
PRODUCTION
2
Charlie
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
9-2-15
PRODUCTION
2
Charlie
__
E13
C9 OPT
+
COUT1 330uF
2.5V 7343
J2
GND
R7 OPT
E11
R32 6.65k
1%
E6
MODE/PLLIN
J5
1
2
3
4
5
R20
0
C1 1uF
25V
C17 1uF
+
COUT4 330uF
2.5V 7343
U1
LTC7130
ITH
A5
VFB
A6
DIFFOUT
A4
DIFFN
A2
DIFFP
A3
SNSD+
B1
SNS-
B2
SNSA+
C1
ILIM
C2
SW
J2
SW
H3
SW
G2
SW
J3
INTVCC
D1
SW
G1
PGOOD
C7
MODE/PLLIN
C6
FR
EQ
B7
RUN
B6
TK/
SS
B5
VIN
G7
SW
G3
SW
H1
SW
H2
SW
J1
GND
D2
GND
D3
GND
D4
GND
E1
GND
E2
GND
E3
GND
F2
GND
F3
GND
G4
GND
G5
GND
G6
GND
H4
GND
H5
GND
H6
GND
H7
GND
J4
GND
J5
GND
J6
GND
J7
VIN
E4
VIN
E5
VIN
E6
VIN
E7
VIN
F4
VIN
F5
VIN
F6
VIN
F7
SGND
B3
SGND
B4
SGND
C4
SGND
C5
BOOST
F1
ITEMP
D6
SVIN
D5
EXTVCC
D7
CLKOUT
C3
NC1
A1
NC2
A7
C8 OPT
R6 OPT
COUT2 100uF
6.3V
R10 100k
R27
OPT
E9
PGOOD
C5 220nF
R13 1k
1%
C6 4.7uF
6.3V
R22 OPT
C15 100uF
6.3V
C11 2.2nF
+
CIN2 OPT
25V
R14 OPT
R19 10k
1%
C16 100uF
6.3V
R8
0
E3
RUN
+
COUT6
OPT 7343
C4
OPT
R24 6.04k
1%
J4
GND
JP2
MODE/PLLIN
P.S.
CCM
BURST
1
2
3
4
E7
TRK/SS
R2 OPT
R18 OPT
D1
CMDSH-3
R25 OPT
R3
2.7
R4 619
1%
R11 3.01k
1%
R28 0.010
R1
2.2
C14
4.7uF
6.3V
CIN6 10uF
25V
J3
1.5V
VOUT
E4
Q1
SUD50N03-10CP-E3
1
2
3
E10
EXTVCC
E1
VIN
CIN4 22uF
25V
R30 10K
C7 220nF
R15
OPT
C2 0.22uF
25V
C12
120pF
R17
0
R23 124k
E5
VO_SNS-
E12
GND
L1
0.25uH
C10 0.1uF
10V
+
COUT5
OPT 7343
E8
CLKOUT
C13
OPT
R5 3.09k
1%
R9 10
CIN5 22uF
25V
JP1
RUN
OFF
ON 1
2
3
R16
0
E2
GND
CIN3 OPT
25V
+
CIN1 180uF
25V
J1
4.5V - 20V
VIN
R12 10
C3 OPT
R29 OPT
RN1
OPT
1
2
COUT3 100uF
6.3V
