Datasheet
5
dc823baf
DEMO MANUAL DC823B-A
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
1
DCM
CCM
2
1
3
2
VIN
GND
VIN+
VIN-
EXTVCC
SVIN
FADJ
VOSET
FCB
PWRGD
SGND
IOSTEP
CLK
VO+
VOUT
GND
VO-
RUN/SS
JUMPER VOUT
JP0
JP1
JP2
JP3
JP4
JP5
1.2V
1.5V
1.8V
2.5V
3.3V
5V
VO+
OFF
ON
RUN/SS
3
FCB
IOSTEP
5V-20V
0.6V-5V/10A
(VOS RTN)
COMP
1
2
3.3V
1
1
1.2V
2
1
12
2
1.5V
21
2
2.5V 5V1.8V
VOUT SEL
2
DC823B-A
Thursday, October 06, 2005
1
1
Custom
SCH, LTM4600EV HIGH EFFICIENCY DC/DC MODULE
823B-1.DSNNONE
MEI
08/04/04
SIZE
SCALE:
CAGE CODE
DWG NO
REV
SHEET
OF
FILENAME:
TITLE
CONTRACT NO.
APPROVALS
DATE
DRAWN
CHECKED
APPROVED
ENGINEER
DESIGNER
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCE ON ANGLE - - -
2 PLACES - - - 3 PLACES - - -
INTERPRET DIM AND TOL
PER ASME Y14.5M -1994
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
PROD1 05/27/05
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
VIN
VOUT
RUN
EXTVCC
SVIN
PWRGD
FADJ
VOSET
VOUT
COMP
FCB
VIN
VIN
C17 OPT
1 2
R13 OPT
1 2
C18
OPT
1 2
R14
100K
12
TP13
TP10
J2
TP14
TP6
C4
OPT
12
JP1
R11
0.01
C15
1uF
1 2
TP1
TP7
JP0
R12
10K
1 2
TP11
J3
TP9
R1
49.9K
12
J4
TP8
R8
0
1 2
U1
LTM4600EV
B1
D1
F1
A3
A5
A7
A9
A11
A13
C10
C12
C14
E14
E12
E10
D23
G1
H9
H11
H13
H15
H17
J1
K7
K9
K11
K13
K15
K17
L2
L4
L6
L8
L10
L12
L14
L16
L18
L20
L22
M2
M4
M6
M10
M12
M14
M16
M18
M20
M22
N2
M8
N4
N6
N8
N10
N12
N14
N16
N18
N20
N22
H7
P22
P20
P18
P16
P14
P12
P10
P8
P6
P4
P2
R22
R20
R18
R16
R14
R12
R10
R8
R6
R4
R2
T22
T20
T18
T16
T14
T12
T10
T6
T4
T2
T8
A19
A17
A15
A21
B23
G23
J23
F23
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
VIN
SGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
EXTVCC
SVIN
FADJ
VOSET
COMP
FCB
PG
OOD
RUN/SS
C13
100pF
C16
1uF
1 2
C12 100pF
12
TP2
C7
100uF
12
C11 OPT
1 2
+
C1
150uF
12
C5
10uF
12
R2
66.5K
12
R3
31.6K
1 2
JP4
C2
10uF
12
TP4
TP12
R9
1M
1 2
C3
OPT
12
R4
22.1K
1 2
C8
OPT
12
J5
1
2
3
4
5
R6
10K
1 2
C14
OPT
1 2
C6
100uF
12
R10
10K
1 2
D1
4.7V
1 3
C19 OPT
1 2
J6
1
2
3
4
5
JP6
JP2
Q14
1
23
JP3
J1
TP5
C10
22uF
6.3V
12
JP7
TP3
JP5
R7
5.1K
1 2
R5
13.7K
1 2