8
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
REMOVE 0 OHM JUMPERS FOR SEPARATE VOUT2_U2.
DEMO
CIRCUIT
2455A
‐(A,B,C)
LTM4650EY
‐1
LT
JL
COMP_U2
RUN_U2
COMP
TRACK_U2
VFB
PGOOD
RUN
TRACK
PGOOD_U2
DIFFOUT_U2
DIFFOUT_U2
VFB_U2
PGOOD_U2
VFB_U2
RUN_U2
COMP_U2
TRACK_U2
COMP
CLKOUT_U1
CLKOUT_U2
RUN
TRACK
PGOOD
VFB
VOUT
INTVCC_U2
VOUT2_U2
VIN
EXTVCC
INTVCC_U2
VO2+
VO2-
VO2+
VO2-
INTVCC_U2
VO2+
VOUT2_U2
VOUT
VOUT2_U2
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
2
5
HIGH
EFFICIENCY,
POLYPHASE,
CD/CD
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
2
5
HIGH
EFFICIENCY,
POLYPHASE,
CD/CD
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
2
5
HIGH
EFFICIENCY,
POLYPHASE,
CD/CD
N/A
STEP-DOWN
MODULE
REGULATOR
R22
0 Ohm
2010
C11 1uF
10V
CO14 OPT
1210
C13 OPT
CIN9 22uF
25V 1210
J13
GND
R23
0 Ohm
2010
R27
0 Ohm
+
CO12 OPT
7343
C8 OPT
C32 OPT
J14
VOUT2_U2
VOUT/
+
CO43 OPT
7343
C9 OPT
+
CO25 OPT
7343
R24
0 Ohm
2010
R21
121K
1%
C15 OPT
E25
Vout
R31
121K
1%
R20
0 Ohm
R25 10
+
CO44 OPT
7343
CO56 220uF
4V 1210
R61
OPT
CO38 OPT
1210
+
CO19 OPT
7343
R26
0 Ohm
2010
CO45 OPT
1210
CO57 220uF
4V 1210
CO13 220uF
1210
4V
CO46 OPT
1210
U2
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
R19
0 Ohm
R34
*
R64 OPT
CIN10 22uF
25V 1210
R32
0 Ohm
R33
0 Ohm
R35
0 Ohm
C14 OPT
E26
Vout2
E11
SW1-2
R28
0 Ohm
R38
OPT
CO18 OPT
1210
CIN8 22uF
25V 1210
CO16 220uF
1210
4V
R37 OPT
R36
10K
C10
4.7uF
10V
CO11 220uF
4V 1210
R29 10
CIN7 22uF
25V 1210
CO15 220uF
4V 1210
E13
VO2-
E12
VO2+
C12 OPT
R30 OPT
E14
SW2-2
CO17 OPT
1210
