DC1319B - Schematic

REVISION #
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice:Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
REVISION HISTORY
SD PC FD AD
0
DESCRIPTION
0 0 0
1st Release
DATE
APPROVED
7/15/09
KSz
OPTIONAL CIRCUIT
R13
R14
(Opt)
0805
Q4
SO8-PWRPAK
(Opt)
L2
10uH
PWMDRAIN
FB1
E14
OUT
CDRH104R-100MC
Sumida
C17
+
47uF
100V
(Opt)
1206
E2
FBMJ4516HS720NB
C16
2.2uF
100V
C15
0.01uF
100V
LED BUCK-BOOST
C9
PVIN
8V - 80V
E1
E13
GND
VIN
8V - 80V
OUT
PVIN
R1
499k
1%
R2
0 Ohm
D1
1
Cooper Bussmann
OUT
WARNING! HIGH VOLTAGE
(Opt)
L1
47uH
HC9-470-R
C10
2.2uF
100V
2
C1
2.2uF
100V
C2
2.2uF
100V
PDS5100-13
R3
(Opt)
C3
2.2uF
100V
Q2
Si7454DP-T1-E3
Siliconix
E5
C4
1uF
100V
OUT
E6
R23
(Opt)
R4
93.1k
1%
7
R15
1M
1%
E10
12
CTRL
R7
130k
1%
E15
GND
13
C14
(Opt)
R16
(Opt)
R18
(Opt)
*
R6
1.82M
1%
C8
(Opt)
E4
PVIN
R20
15
GND
Q5
(Opt)
SOT23
R9
24.9k
1%
FB
VREF
ISP
2
4
PWMDRAIN
3
CTRL
PWMOUT
**
R22
1
E8
Q1
Si2328DS
Siliconix
LED BOOST
0 Ohm
INTVCC
PWM
SS
VC
GND
RT
10
5
17
11
PWM
8
E9
PWM
R21
(Opt)
D2
(Opt)
PWM
0.20
1%
C18
(Opt)
SENSE
SHDN/UVLO
C5
4.7uF
10V
R10
*
16
GATE
ISN
9
INTVCC
E11
14
VIN
R5
(Opt)
6
C12
2.2uF
100V
RS1
0.015
U1
*
C11
2.2uF
100V
R19
(Opt)
(Opt)
SHDN/UVLO
E7 LED +
80V max
500mA
RS2
3
R11
(Opt)
C7
0.1uF
R17
10k
C6
4700pF
R8
37.4k
1%
300kHz
INTVCC
C13
(Opt)
*
APPROVALS
ASSY
U1(IC)
-A
LT3756EMSE-2
-B
LT3756EMSE-1
U1-9 (Name)
OPENLED
SYNC
E11 (Name)
R10
OPENLED
100k
SYNC
OPT
DRAWN: Rudy Bautista
ENGINEER: KSz
LINEAR TECHNOLOGY CORPORATION
1630 McCARTHY BLVD
MILPITAS, CA. 95035
(408)432-1900
(408)434-0507 (FAX)
Title:
LT3756EMSE/-2/-1
APPROVED:
CHECKED:
Date:
Monday, August 03, 2009
SD
Document Number
www.linear.com
LTC Confidential For Customer Use Only
High Voltage LED Controller
Rev
Demo Circuit 1319B
C:\ORCADWIN\CAPTURE\1319B\1319B_00_REV1.DSN
Sheet
1
1
of
1
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