DC1827A - Schematic

5
4
3
2
1
REVISION HISTORY
DESCRIPTION
APPROVED
ECO REV
1
2
3
-
1st PROTOTYPE
2nd PROTOTYPE
PRODUCTION
DATE
ANDY R
ANDY R
ANDY R
July 18, 2011
Dec 06, 2012
Aug 30, 2013
R21
(OPT)
0603
D
D
C15
PVIN
R1
499k
1%
0603
E1
R12
(OPT)
0603
R11
EN/UVLO
0 Ohm
E2
PVIN
8V - 60V
110V MAX.
63V OVLO
C2
2.2uF
100V
1210
VOUT
R8
0 Ohm
1206
E3
VIN
8V - 60V
110V MAX.
63V OVLO
C1
1uF
100V
1206
E4
GND
R9
(OPT)
1206
R13
(OPT)
0603
C4
2.2uF
100V
1210
R14
(OPT)
0603
24
VREF
R16
100k
R17
100k
R19
(OPT)
23
10
R18
(OPT)
0603
E5
9
E6
6
14
13
B
E8
ISMON
L1
22uH
5
C13
0.1uF
27
26
19
OVLO
IVINP
IVINN
GATE
R20
0 Ohm
0603
INTVCC
C14
0.047uF
C5
4.7uF
10V
E9
GND
20
FB
ISP
ISN
CTRL1
TG
CTRL2
IVINCOMP
PWM
SHORTLED
RAMP
ISMON
OPENLED
INTVCC
VC
RT
12
GND GND GND GND GND
4
17
21
22
29
R23
C8
2.2uF
100V
1210
C9
2.2uF
100V
1210
VREF
18
E11
VOUT
E12 LED+
400mA
87V
D2
ES1C
R25
(OPT)
0603
R26
(OPT)
0603
Q2
(OPT)
SOT23
(OPT)
R6 0603 M3
13.3k
(OPT)
1%
SOT23
7
R27
(OPT)
0603
/OPENLED
R31
(OPT)
0603
R30
(OPT)
0603
IVINN
1
C
E13
GND
E14
GND
R24
RS1
0.015
1%
2010
C20
(OPT)
0402
PVIN
2
3
E15
28
R28
100k
16
R29
E17
/OPENLED
C11
0.01uF
8
IVINCOMP
E16
INTVCC
15
SHORTLED
B
OPENLED
100k
R7
10k
E18
GND
R22
R5
31.6k
1%
250kHz
C12
0.01uF
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
NOTE: UNLESS OTHERWISE SPECIFIED.
1. ALL RESISTORS 5%, 0402.
2. ALL CAPACITORS 0603.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
3
TECHNOLOGY
RB
ANDY R
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
TITLE: SCHEMATIC
SIZE
C:\PADS PROJECTS\1827A\SCH\1827A_REV3.DSN
5
M2
Si7115DN-T1-E3
0.620
1%
2010
C19
(OPT)
1210
Q1
(OPT)
SOT23
CUSTOMER NOTICE
A
C10
2.2uF
100V
1210
(OPT)
0603
VREF
11
C6
0.1uF
GND
R4
1.00M
1%
0603
VIN
SS
(OPT)
E10
SENSE
EN/UVLO
RS2
C7
2.2uF
100V
1210
PDS5100-13
M1
BSC190N12NS3G
25
(OPT)
1210
D1
HC9-220-R
Cooper Bussmann
U1
LT3795EFE
E7
PWM
IVINN
0.015
1%
2010
R3
12.4k
1%
VOUT
R15
(OPT)
CTRL2
C3
2.2uF
100V
1210
VOUT
(OPT)
1210
C18
RS3
C
CTRL1
R32
(OPT)
0603
C21
(OPT)
12.5 Dia. SMD
+
HIGH
VOLTAGE
WARNING!
(OPT)
1210
C17
PVIN
R2
115k
1%
R10
(OPT)
PVIN
(OPT)
1210
C16
VOUT
IC NO.
110V LED CONTROLLER WITH SPREAD
SPECTRUM FREQUENCY MODULATION
LT3795EFE
DC1827A
MODIFY DATE: Aug 30, 2013
SHEET
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REV.
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