DC1482A - Schematic

A
B
C
4
CPVIN
1uF
50V
(Opt.)
VIN
VIN
6V - 30V
SW
R1
0
1206
E3
CVIN
1uF
50V
OUT
GND
SHDN / UVLO
E5
R13
(Opt.)
0603
5
U1
LT3519EMS
7
+C1
OUT
ANODE
E1
6
PVIN
6V - 30V
VIN
CATHODE
11
ISN
12
4
R11
(Opt.)
0603
3
2
R9
100k
0603
GND
CTRL
GND
14
OPENLED
R7
29.4k
OPENLED
E9
E11
R10
137k
LED-
E10
M1
Si2318DS
1
2
2
2
GND
13
3
CTRL
R12
(Opt.)
0603
PWM
LED+
100mA
16
R8
1M
3
9
OUT
GND
VIN
GND
PVIN
FB
1
E8
E2
COUT
4.7uF
50V
E7
VREF
GND
15
R6
(Opt.)
0603
COUT2
(Opt.)
R4
1M
SHDN/UVLO
8
R5
243k
OUT
R2
2.49
0805
E4
R3
1M
E6
10
ISP
3
PWM
E
L1
68uH
DR74-680-R
PVIN
4
D
E12
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
Linear Technology Corporation
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.
1
NOTES: UNLESS OTHERWISE SPECIFIED
ALL RESISTORS ARE 0402
A
B
C
1630 McCarthy Blvd.
Milpitas, CA. 95035
Phone (408) 432-1900
Fax (408) 434-0507
www.linear.com
1
Title
LT3519EMS,
Size
4W LED Driver
Document Number
Rev.
A
Demo Circuit 1482A
Date:
Tuesday, July 21, 2009
D
Sheet
1
of
E
1
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