DC843A - Schematic

4
3
2
2
1
* 700mA 300ms FLASH
1
2
5
C1
10uF,10V
0805
D1
PMEG2010EA
PHILIPS
LED1
+
*
D
1
2
3
C5
0.1uF,6.3V
C4
0.1uF,6.3V
BT1
PC MOUNT
KEYSTONE
2464
OPT
R5
10k
C6
2.2uF,6.3V
0603
R1
1k
1
2
3
4
1
5
3
6
7
4
R2
1k
RT
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 0402.
2
VREF 8
SHDN
6
5
2
1
0.01uF
3
2200pF
R12
1k
10k
VISHAY
R4
0.150
1%
0805
R8
107k
1%
R9
2.49k
1%
C
R10
10k
1%
RA5
VSS 14
RA0 13
RA4
RA1
MCLR#
RA2
RC5
RC0
RC4
RC1
RC3
RC2
VDD
PIC16F630I/ST
SW3
12
11
10
1
BOURNS-7914J
2
ON/OFF
9
8
EN2
B
EN1
R6
10k
5%
R7
10k
5%
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
CIRUIT 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.
4
Q2
Si1406DH
3
CUSTOMER NOTICE
5
R11 7
15k
FBN 10
FBP 9
VIN
U2
LED2
LTST-C155KGJRKT
2
A
6
VS
SW1
BOURNS-7914J
1
2
Flash
SW2
BOURNS-7914J
1
2
Torch
B
5
C2
R3 C3
4
E2
GND
+
VIN
SS 12
VC 11
L
Q1
Si1406DH
1
2
5
6
C
VIN
SW
15
E1
VIN
2.7V-4.5V
4
GND 14
GND 13
SW
4
1
SUMIDA
CDRH5D28-3R0
GND
1
U1
LT3479EDE
L1
3.0uH
2
3
3
4
4
6
6
JP1
HD2X3-079
OPT
D2
CMOZ10L
2
5
5
1
1
D
AOT 3218 HPW 1502B
150mA/700mA
AOT
3
APPROVALS
DRAWN:
CHECKED:
APPROVED:
ENGINEER: KEITH S.
DESIGNER:
TECHNOLOGY
KIM T.
TITLE:
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
SCHEMATIC
A
HIGH CURRENT BOOST LED DRIVER
SIZE
DWG NO.
A
DATE:
DC843A-2 * LT3479EDE
Wednesday, February 09, 2005
2
SHEET 1
1
REV
A
OF 1
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