11
dc2455abf
DEMO MANUAL DC2455A-B
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
VOUT
PULSE
DYNAMIC LOAD CIRCUIT
70Hz, 3% Duty Cycle
INT
EXT
1%
IOUT STEP
OPTIONAL 5V BIAS
ON
OFF
BIAS
LT
JIAN
L
LTM4650EY
‐1
DEMO
CIRCUIT
2455A
‐(A,B,C)
LT
JL
+5V
VIN
+5V
EXTVCC
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
Monday,
May
23,
2016
5
5
HIGH
EFFICIENCY,
POLYPHASE,
DC/DC
N/A
STEP-DOWN
MODULE
REGULATOR
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
Monday,
May
23,
2016
5
5
HIGH
EFFICIENCY,
POLYPHASE,
DC/DC
N/A
STEP-DOWN
MODULE
REGULATOR
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
Monday,
May
23,
2016
5
5
HIGH
EFFICIENCY,
POLYPHASE,
DC/DC
N/A
STEP-DOWN
MODULE
REGULATOR
J12
R100
82.5
1%
J11
R89 2
E34
GND
R106 80.6k
1%
R95 20K
E33
EXT PULSE
R105 105K
1%
U6
LT1803IS5
VOUT
1
V-
2
+IN
3
-IN
4
V+
5
C43 1uF
C41
100uF
10V
1210
C46 10uF
16V 1210
C42 1uF
C45 100uF
1210
6.3V
C49
47nF
R104 1K
C53 100uF
1210
6.3V
Q1
SUD50N04-8M8P-4EG3
U5
LTC6992IS6-1
MOD
1
GND
2
SET
3
DIV
4
V+
5
OUT
6
C55 100uF
1210
6.3V
R87
OPT
C39
100nF
R97 681K
1%
JP10
1
2
3
R101 0.01
2512
R107 20K
C48
100uF
10V
1210
C44 100uF
1210
6.3V
R91
0 Ohm
C47
220pF
R96 20K
R94
1M
R102 0.01
2512
R99 301
R103
5K
C52 100uF
1210
6.3V
Q2
SUD50N04-8M8P-4EG3
C40 150pF
C54 100uF
1210
6.3V
R92
3.3
1%
R98 10K
COUT26 1uF
L1 68uH
SUMIDA CDRH105
C51
OPT
U7
LTC3630EMSE
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
R93
154k
JP9
1
2
3
