DC1285A - Schematic

5
3
C1
2.2uF
50V
C7
10uF
50CE10BJ
OPT
VISHAY IHLP-2525BD-01
C6
4.7uF
50V
C3
4.7uF
50V
23
LT3598EUF
LED1LED2LED3LED4LED5LED6E8
E10
E12
E14
E16
E18
VOUT
E2
R1
100K
1%
22
C2
1uF
6.3V
VIN
VO_SW
24
R2
2.4M
1%
E3
7
ON
20
SHDN
FB
11
15
PWM
NC
13
14
SYNC
LED1
1
16
RT
LED2
2
LED3
3
18
VREF
LED4
4
LED5
5
LED6
6
C8 0.1uF
E20
9
12
TSET
R12
107K
1%
B
CTRL
R9
178K 1%
C10
47pF
SS
100K 1%
R6
10K
1%
17
E7
GND
R5
51.1K
1%
B
VC
E4
25
100K 1%
10
2
R7
100K 1%
R11
C
R4 76.8K 1%
1
JP1
R3
OPENLED
19
OFF
CTRL
APPROVED
U1
3
SYNC
09/03/08
40V 1A
VIN
VIN
PWM
DATE
PROD
E9
E11
E13
E15
E17
E19
LED1+ LED2+ LED3+ LED4+ LED5+ LED6+
21
OPENLED
DESCRIPTION
A
VOUT
1
E1
3.2V - 5.5V
GND
+
REV
D1
SW
VIN
10uH
2
E5
1
D
L1
E6
3V - 40V
GND
ECO
ISET
PVIN
C
2
REVISION HISTORY
8
D
4
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.
R10
C4
C9
0.1uF
100pF
3K 1%
C5
10nF
R8
14.7K
1%
CONTRACT NO.
APPROVALS
DRAWN
MEI
DATE
05/25/07
TECHNOLOGY
TITLE
CHECKED
A
APPROVED
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SCH, LT3598EUF, 6-STRING 30mA LED DRIVER WITH
1.5% CURRENT MATCHING
ENGINEER
DESIGNER
Friday, September 12, 2008
5
4
3
SIZE
CAGE CODE
DWG NO
REV
DC1285A
SCALE:
FILENAME:
2
1285A-3.DSN
SHEET
A
1
1
OF
1
A
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