DC469B - Schematic

5
4
3
2
1
REVI SION HISTORY
LTC CONFIDENTIAL - For Customer Use Only
ECO
REV
0
DESCRIPTION
B
DATE
PRODUCTION RELEASE
12-19-01
APPROVED
>
VIN
D
D
VIN
TP1
PVcc2
R17
TP6
PVcc2
1
[1]
D3
PVcc1
MBR0520LT1
C10
10uF
16V
D5
C11
10uF
16V
C12
10uF
16V
3.1V-8V
C14
+ 220uF
10V
7343
TANT
2
0
D4
C13
10uF
16V
TP4
GND
[1]
5 6 7 8
5 6 7 8
Q1
Q2
OPTION
D2
MMSZ5242B
C6
1uF
16V
14
C3
C1
2.2uF
10V
9
VCC
C8
0.1uF
16V
C9
[1]
1 2 3
1 2 3
2
PVcc1
U1
C
SS
IFB
G2
FREQSET
130K
RUN
G1
IMAX
0.01uF
R3
11
TP3
C7
0.1uF
16V
[1]
4
Vcc
15
R1
10
4
R4
12K
PVcc2
R15
1K
Si7892DP
8
PGND
GND
SHDN
C
1
G1
L1
12
R5
VOUT
13
16
SHEET 2
Vo
TP2
1K
5 6 7 8
Q3
5 6 7 8
1.3uH
Q4
OPTION
3
4
Si7892DP
4
4
D1
B320A
C15
+ [1]
OPT.
7343H
[1]
C16
+ 180uF
4V
7343H
C17
C18
+ [1] + [1]
OPT.
OPT.
7343H
7343H
2.5V/1.8V/1.5V
C19
10uF
16V
@12A
COMP
R2
18.2K
SEE NOTE: [2]
LTC3832EGN
SENSE+
FB
7
6
1 2 3
1 2 3
R6
9.53K
1%
5
10
150pF
SENSE-
C4
C5
3300pF
C21
470pF
JP1
R8
16.5K
1%
JP2
R9
8.66K
1%
JP3
1.8V
B
C20
[1]
1.5V
R7
3.01K
1%
B
TP7
GND
G2
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCE ON ANGLE - - 2 PLACES - - - 3 PLACES - - INTERPRET DIM AND TOL
PER ASME Y14.5M -1994
NOTES: UNLESS OTHERWISE SPECIFIED,
[1] C9,C15,C17,C18,C20,D4,D5,Q2,Q4 OPTIONAL - DO NOT STUFF.
A
[2] DC469B-A: COMPONENTS INSIDE DOTTED FRAME SHEET 1.
DC479B-B: COMPONENTS ON SHEET 2 INSTEAD.
THIRD ANGLE PROJECTION
CONTRACT NO.
APPROVALS
DRAWN
MEI
DATE
12-19-01
CHECKED
TECHNOLOGY
TITLE
A
STEP-DOWN POWER SUPPLY
ENGINEER
SIZE CAGE CODE
DESIGNER
B
DO NOT SCALE DRAWING
4
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SCH,LTC3832EGN/-1ES8 HIGH EFFICIENCY
APPROVED
5
SHEET 2
Wednesday, September 11, 2002
2
SCALE:NONE
DWG NO
REV
B
DC469B
FILENAME: 469B-1.DSN
SHEET
1
1
OF
2
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