DC928A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
0
DATE
APPROVED
1st PROTOTYPE
D
D
VIN
GND
L1
4.7uH
SD3814-4R7
! "
VIN
E1
CIN
2.2uF
6.3V
E2
E3
ENH
S1
C
R2
4.87k 1%
R1
100k
1
20
19
ISETH
15
VC
0.1uF
DISPLAY
R4
R3
100k
10.2k
1%
2
ENL
3
ISETL
17
GND GND
9
11
16
250mA
SW2 VOUT
U1
LTC3452EUF
ENH
13
C1
E4
ENL
S2
14
COUT
4.7uF
6.3V
LEDH
AOT-2015
VIN PVIN SW1
FLASH
#
LEDH1
10
LEDH2
12
LEDL1
4
LEDL2
5
LEDL3
6
LEDL4
7
LEDL5
8
LEDL1
NSCW100
LEDL2
LEDL3
LEDL4
C
LEDL5
NSCW100
PGND GND
18
21
B
B
ENL PWM DUTY
CYCLE
A
LEDL1-LEDL5
CURRENT
94%
20mA
81%
10mA
69%
5mA
56%
2.5mA
44%
1.25mA
31%
0.625mA
19%
0.312mA
6%
0.156mA
LEDH = 250mA
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A APPROVALS
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
DRAWN: Rudy B
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
CHECKED:
TITLE:
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APPROVED:
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
ENGINEER: DAVID B.
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
SIZE
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. DESIGNER:
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
CONTRACT NO.
4
3
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
SCHEMATIC
DWG NO.
A
A
DEMO CIRCUIT 928A
Wednesday, March 08, 2006
DATE:
2
SHEET 1
1
REV
1
OF 1
Similar pages