DC841A - Schematic

5
4
3
2
1
REVISION HISTORY
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice: Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
ECO
REV
DESCRIPTION
DATE
3
PROD
11/11/04
APPROVED
D
D
PVIN
E9
OPTION
VIN
E1
C7
OPT
L1
SUMIDA
CDRH6D38-5R0
R1
VIN
2.7V - 16V
0.03
C1
4.7uF
D1
DFLS140
5uH
IADJ1 *
E5
1
R11 OPT
1
2
1
IADJ2 *
E6
2
R10 OPT
VIN
C5
OPT
17
SW
VIN
FBN
6
IADJ1
9
IADJ2
N/C
N/C
N/C
18
19
20
ISP2
11
U1
C6
OPT
LT3477EFE
SHDN
E2
1
SHDN
1%
330mA
36V MAX
2
1%
7
FBP
8
VREF
5
VC
ISN2
1
OPT
R2
1k
GND
RT
SS
4
2
R13
15
R12 OPT
-VOUT 1
2
VOUT
12
R14 0
GND
R6
10k
R4
0.3
R7
10k
B
C
1%
10
3
E8
2.2uF
R5
280k
SW
16
14
ISN1
C
13
R9
0
1
R8
0
ISP1
2
E3
1
GND
C4
2.2uF
2
25V
C8
2
R3 22k
E4
E7
VOUT
LED+
GND
LED-
B
C3
0.033uF
C2
4700pF
* MUST INSTALL R10, R11 AND REMOVE
R8, R9 FOR IADJ FUNCTION.
CONTRACT NO.
APPROVALS
DRAWN
A
MEI
CHECKED
APPROVED
ENGINEER
DESIGNER
Monday, April 11, 2005
5
4
3
DATE
09/21/04
TECHNOLOGY
TITLE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SCH, LT3477EFE, CONSTANT CURRENT BOOST CONVERTER
WITH INPUT CURRENT AND OUTPUT VOLTAGE PROTECTION
SIZE CAGE CODE
FILENAME:
SCALE:
2
DWG NO
841A-3.DSN
REV
DC841A
3
SHEET
1
1
OF
1
A
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