DC1137A - Schematic

5
4
VIN
3V-5V
E1
GND
3
2
1
VIN
C2
1uF
6.3V
C6
(OPT)
E2
D
C3
0.22uF
25V
LED6
1
C4 0.1uF
C5 0.1uF
R5
100K
E7
CTRL1
3
OFF
B
E8
CTRL2
Q1
SI2302ADS
2
1
CUSTOMER NOTICE
CONTRACT NO.
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
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
A
5
VIN
ON
2
R4
100K
JP2
VOUT2
3
ON
2
OFF
C
6
1
3
JP1
LED DRIVER
B
R2
100k
GND
FB2
CTRL2
5
GND2
4
3
GND1
CTRL1
2
13 GND
VIN
E6
VOUT2
[email protected]
R3
2.21M
LED4
LED5
E9
E3
LED2
LED3
PWM
C7
2.2uF
25V
VOUT2 7
SW2 9
U1
LT3498EDDB
LED1
E5
10uH
CAP2 8
LED1
GND
L2
VIN 10
E4
C
15uH
Copper
Copper
SD3112-150 SD3112-100
1
LED
L1
R1
10
SW1 11
C1
0.47uF
50V
CAP1 12
D
4
3
APPROVALS
DRAWN
DATE
HELEN
4/03/07
Walker Bai
4/04/07
CHECKED
TECHNOLOGY
TITLE
APPROVED
ENGINEER
DESIGNER
Tuesday, June 26, 2007
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
A
LT3498EDDB, 20mA Six White LED Driver
and OLED Driver with Integrated Schottky
SIZE CAGE CODE
FILENAME:
SCALE:
2
DWG NO
REV
A
DC1137A
SHEET
1
1
OF
1
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