DC1130A - Schematic

4
R1
VIN
C7
22uF
(OPT)
4.7uH
C1
1uF
25V
E3
C4
4.7uF
R5
1.02M
1%
9 IADJ2
R4
0.3
1%
7 FBP
8 VREF
1
E9
SS
4
Q1
2N7002
1
3
R8
10K
21 GND
D2
1N4148W
2
2
5 VC
R2
0
RT 2
R3
C3
0.033uF
LED3-
LED2-
LED1-
E7
E6
E5
LT3003EMSE
E11
8 OT2
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
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
VMAX
Vmax 4
B
VIN
Vin 5
SHDN
7 OT1
9
OT2
E10
11 GND
OT1
10 VEE
B
4
C
VOUT
LED+
C2 22nF
6 PWM
5
GND
6.81K
U2
A
VOUT
E4
ISN2 12
15 GND
C
E8
ISP2 11
3 SHDN
LED2 2
E2
R6
45.3K
1%
FBN 6
N/C 18
N/C 19
N/C 20
1 VIN
10 IADJ1
SHDN
D
DFLS140
LT3477EFE
1
VMAX
1
U1
R7
45.3K
PWM
D1
2
SUMIDA
CDRH5D16-4R7
VIN
SHDN
L1
0
LED3 3
GND
E1
ISP1 13
ISN1 14
VIN
8V-16V
2
SW 16
SW 17
D
3
LED1 1
5
C9
1uF
25V
SHDN
CONTRACT NO.
APPROVALS
DRAW N
DATE
HELEN
11/29/05
W alker Bai
11/29/05
CHECKED
TECHNOLOGY
DESIGNER
W ednesday, October 25, 2006
2
A
TITLE
APPROVED
ENGINEER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SIZE
LT3477EFE+LT3003EMSE, High Current Multi-String
LED Driver with Wide PWM Dimming Range
CAGE CODE
SCALE:
FILENAME:
DWG NO
REV
A
DC1130A
SHEET
1
1
OF
1
Similar pages