5
dc1877af
DEMO MANUAL DC1877A
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
BB
B
B
A
A
AA
ON
OFF
VIN
4V - 76V
GND
FBO
VOUT
1.8V/3.3V/5V 500mA
GND
2
2
BA
1. ALL RESISTORS AND CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
JP1
JP2
VOUT
BA
1.8V
3.3V
5.0V
EXT. R
GND
2
3
1
1
1
3
3
2
2
3. FOR 5V OUTPUT, VIN RANGE IS 6V-76V.
2
VIN
VOUT
VIN
VOUT
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP 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.
SCALE = NONE
www.linear.com
1
Friday, December 12, 2014
11
HIGH EFFICIENCY, 76V, 500mA SYNCHRONOUS
HZ
Charlie Z.
N/A
LTC3630AEDHC DEMO CIRCUIT 1877A
STEP-DOWN CONVERTER
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP 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.
SCALE = NONE
www.linear.com
1
Friday, December 12, 2014
11
HIGH EFFICIENCY, 76V, 500mA SYNCHRONOUS
HZ
Charlie Z.
N/A
LTC3630AEDHC DEMO CIRCUIT 1877A
STEP-DOWN CONVERTER
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP 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.
SCALE = NONE
www.linear.com
1
Friday, December 12, 2014
11
HIGH EFFICIENCY, 76V, 500mA SYNCHRONOUS
HZ
Charlie Z.
N/A
LTC3630AEDHC DEMO CIRCUIT 1877A
STEP-DOWN CONVERTER
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
Charlie Z.
PRODUCTION
1
7-9-13
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
Charlie Z.
PRODUCTION
1
7-9-13
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
Charlie Z.
PRODUCTION
1
7-9-13
JP1
R2 OPT
R7 OPT
E6
E2
C10 OPT
1210
R4 220k
JP3
E3
C9 0.1uF
JP2
C11 OPT
1210
C4 47nF
L1
68uH
SUMIDA CDRH105
C1 220nF
100V 0805
R5 4.7
0805
C7 100uF
10V 1210
U1
LTC3630AEDHC
SW
1
VIN
3
FBO
12
VPRG1
7
VPRG2
6
GND
8
VFB
9
SS
10
ISET
11
GND
14
RUN
5
GND
16
GND
17
NC
2
NC
4
NC
13
NC
15
E5
R6 0
R1 OPT
C5 OPT
C3 220pF
E1
D1
OPT
R3
OPT
C6 100uF
10V 1210
E4
C8 OPT
1210
C2 4.7uF
100V 2220
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
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