7
dc2455aaf
DEMO MANUAL DC2455A-A
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
VOUT SELECT
NOTE:
UNLESS
OTHERWISE
SPECIFIED,
1.
ALL
CAPACITORS,
RESISTORS
0603.
ASSY
I.C.
‐A
U1,
U2
U1,
U2,
U3
U1,
U2,
U3,
U4
‐B
‐C
100A
150A
200A
Iout
OPT
0
OPT
R13
OPT
0
0
R34
OPT
22uF
22uF
Cin12, 13, 14, 15
OPT
OPT
22uF
Cin16, 17, 18, 19
OPT
220uF
220uF
Co20, 21,26,27
OPT
OPT
220uF
Co34,35,48,50
*
*
Co33,36,52,54
Co22,28,30,32
LTM4650EY
‐1
DEMO
CIRCUIT
2455A
‐(A,B,C)
LT
JL
VFB
PGOOD
COMP
RUN
TRACK
VOUT
VFB
PGOOD
COMP
RUN
TRACK
DIFFP DIFFN
VFB
PGOOD
COMP
CLKOUT_U1
RUN
TRACK
VFB
VIN
INTVCC_U1
INTVCC_U1
VOUT
VO+
VO-
VO+
INTVCC_U1
VIN
VO+
VO-
VOUT
EXTVCC
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
1
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
1
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
1
5
HIGH
EFFICIENCY,
POLYPHASE,
DC/DC
N/A
STEP-DOWN
MODULE
REGULATOR
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JL
PRODUCTION
-1
05/22/16
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JL
PRODUCTION
-1
05/22/16
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JL
PRODUCTION
-1
05/22/16
E23
Vout
+
CO4 OPT
7343
C1
330pF
+
CO39 OPT
7343
J1
4.5V -15V
VIN
CO9 OPT
1210
CO8 220uF
1210
4V
E5
SW1-1
CIN6 22uF
25V 1210
C6 1uF
10V
R60
0 Ohm
1206
R9
121k
1%
CO1 220uF
4V 1210
U1
LTM4650EY-1
VOU
T1
A1
VOU
T1
A2
VOU
T1
A3
VOU
T1
A4
VOU
T1
A5
VOU
T1
B1
VOU
T1
B2
VOU
T1
B3
VOU
T1
B4
VOU
T1
B5
VOU
T1
C1
VOU
T1
C2
VOU
T1
C3
VOU
T1
C4
VFB1
D5
SW1
G2
PGOOD1
G9
COMP1
E6
RUN1
F5
TRACK1
E5
VOUTS1
C5
VOUT2
A8
VOUT2
A9
VOUT2
A10
VOUT2
A11
VOUT2
A12
VOUT2
B8
VOUT2
B9
VOUT2
B10
VOUT2
B11
VOUT2
B12
VOUT2
C9
VOUT2
C10
VOUT2
C11
VOUT2
C12
VFB2
D7
SW2
G11
PGOOD2
G8
COMP2
E7
RUN2
F9
TRACK2
D8
VOUTS2
C8
VIN
M2
VIN
M3
VIN
M4
VIN
M5
VIN
M6
VIN
M7
VIN
M8
VIN
M9
VIN
M10
VIN
M11
VIN
L2
VIN
L3
VIN
L4
VIN
L5
VIN
L6
VIN
L7
VIN
L8
VIN
L9
VIN
L10
VIN
L11
VIN
K2
VIN
K3
VIN
K4
VIN
K9
VIN
K10
VIN
K11
VIN
J2
VIN
J3
VIN
J4
VIN
J9
VIN
J10
VIN
J11
GND
A6
GND
A7
GND
B6
GND
B7
GND
D1
GND
D2
GND
D3
GND
D4
GND
D9
GND
D10
GND
D11
GND
D12
GND
E1
GND
E2
GND
E3
GND
E4
GND
E10
GND
E11
GND
E12
GND
F1
GND
F2
GND
F3
GND
F10
GND
F11
GND
F12
GND
G1
GND
G3
GND
G10
GND
G12
GND
H1
GND
H2
GND
H3
GND
H4
GND
H5
GND
H6
GND
H7
GND
H9
GND
H10
GND
H11
GND
H12
GND
M12
GND
M1
GND
L12
GND
J1
GND
J5
GND
J8
GND
J12
GND
K1
GND
K5
GND
K6
GND
K7
GND
K8
GND
K12
GND
L1
SGN
D
C7
SGN
D
D6
SGN
D
F6
SGN
D
F7
SGN
D
G6
SGN
D
G7
FSET
C6
PHASMD
G4
DIFFP
E8
DIFFN
E9
CLKO
UT
G5
MO
DE-P
LLIN
F4
TEMP
J6
INTVCC
H8
EXTVCC
J7
DIFFOUT
F8
R62 0 Ohm
E2
VO+
R16
60.4K
1%
CIN4 22uF
25V 1210
C5 OPT
C2 OPT
R7
OPT
+
CIN1 150uF
25V
R1 10
JP1
EXT
INT
CLK
1
3
2
R13
*
J4
GND
CIN2 1uF
25V 1206
E10
SW2-1
E4
VIN-
CIN3 22uF
25V 1210
R18
30.1K
1%
J3
GND
R8 OPT
+
CO10 OPT
7343
R17
40.2K
1%
CO42 OPT
1210
R5
OPT
C31 15nF
CO6 220uF
4V 1210
J2
0.6 - 1.8V
VOUT
E22
SGND
R4 10K
CO7 220uF
4V 1210
R11 1.74K
R14
121K
1%
CO5 220uF
4V 1210
E1
EXT_CLK
CIN5 22uF
25V 1210
JP5
1.0V
R63
0 Ohm
JP6
1.2V
E6
VO-
CO2 220uF
1210
4V
JP7
1.5V
R2
121K
1%
JP4
0.9V
C7 0.1uF
JP2
ON
OFF
RUN
1
3
2
JP8
1.8V
E9
TRACK
E7
PGOOD
+
CO41 OPT
7343
CO3 OPT
1210
R3 10
R6 0 Ohm
C4 4.7uF
10V
E3
VIN+
E24
Vout
C3 OPT
CO40 OPT
1210
R10 OPT
R15
90.9K
1%
E8
EXTVCC
