DC905A - Schematic

5
D
4
3
2
ECO
CTRL1
C3
1
C4
47uF
1
GND
C
15uH
D6
D5
D4
SW
5
VIN
U2
LT3491ESC8
R2
CTRL2
C7
6
7
GND
GND
B
HIGH EFFICIENCY
4
2
3
JP2
GND
3
LED
ON
C6
0.47uF
50V
R4
10.0
1%
VIN
100nF
8
CTRL
2
100K 1%
D3
1
1
L2
2
E4
D2
EFFICIENCY
OPT
CAP
CTRL2
D1
2
C5
1uF
6.3V
B
JP4
SIZE
1
+
E2
7 LED
3
2
GND
OFF
C2
1uF
25V
R3
13.3
1%
4
EFFICIENCY
JP1
3
ON
LED
GND
3
3
SIZE
2
3V - 5V
GND
8
CTRL
2
E1
1
VIN
JP3
6
VIN
100nF
VIN
APPROVED
SMALL SIZE
SW
5
VIN
U1
LT3491ESC8
CAP
C
DATE
11/21/05
10uH
R1
100K 1%
DESCRIPTION
PROTO
D
C1
1uF
6.3V
CTRL1
REV
3
L1
E3
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 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
Applications Engineering for assistance.
1
OFF
CONTRACT NO.
APPROVALS
DRAWN
MEI
DATE
04/11/05
CHECKED
A
TECHNOLOGY
TITLE
SCH, LT3491ESC8, LED DRIVER IN SC70 WITH
BUILT-IN SCHOTTKY
APPROVED
ENGINEER
DESIGNER
Friday, December 16, 2005
5
4
3
SIZE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
CAGE CODE
SCALE:
DWG NO
FILENAME:
2
905A-3.DSN
REV
DC905A
SHEET
A
3
1
1
OF
1
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