DC1666A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
3
D
GND
1210
C4 470nF
9
E8
12
R16
INTVCC
EN/UVLO
BST1
BST2
R6
115k
0603
R10
OPT
TG1
38
OVLO
SW1
R11
54.9k
E10
4
OPENLED
OPENLED
E11
8
IVINMON
E12
7
ISMON
E13
33
CLKOUT
E15
B
34
R14
0
0603
GND
VREF
R20 OPT
E19
GND
E21
Css
10nF
2
SW2
TG2
OPENLED
FB
IVINMON
ISP
ISMON
ISN
SYNC
PWMOUT
SS
R12
86.6k
300kHz
DATE
1-31-12
C16
(OPT)
VIN
4.7V - 60V
0
13
PWM
INTVCC
E5
C7
4.7uF
10V
0603
D1
BAT46WJ
D
GND
E3
INTVCC
D2
BAT46WJ
OUT
E6
15
RLED
22
M1
RJK0651DPB
14
C8
0.1uF
0402
C6
0.1uF
0402
D4
OPT
RJK0451DPB
C9
4.7uF
50V
1210
M4
L1 10uH
16
M2
RJK0651DPB
18
C10
4.7uF
50V
1210
C15
4.7uF
50V
1210
C17
(OPT)
0.05
2010
LED+
E14 2A
C
M3
RJK0451DPB
R9
44.2k
27
R21
OPT
RS
0.004
2010
28
C13
4.7uF
50V
1210
R7
1M
SUMIDA
HC9-100-R
D3
OPT
OPENLED
M6
OPT
19
21
24
37
25
C18
OPT
26
CLKOUT
RT
E20
SHORTLED
35
SYNC
BG2
PGND
5
SHORTLED
SNSN
VREF
PGND
6
NC
17
VREF
0402
23
PGND
R5
200k
0603
C11
0.1uF
SGND
INTVCC
SNSP
TEST1
R18
OPT
CTRL
30
R8
237k
BG1
LT3791EFE
VC
E9
R4
200k
0603
U1
1
29
CTRL
36
C
20
E17
39
OVLO
C14
2.2uF
100V
1210
E2
R15 OPT
TEST2
EN/UVLO
C12
2.2uF
100V
1210
C3
2.2uF
100V
1210
C5
1uF
100V
1206
VIN
11
IVINP
IVINN
R13
332k
10
0402
R19
1M
C2
2.2uF
100V
1210
R2
0
1206
R17
51
E4
R3
1M
KEITH S.
0.003
RIN
PVIN
E1
32
PVIN
4.7V - 60V
APPROVED
PRODUCTION
M5
R23 OPT
0603
31
LEDE16
B
Si2318DS
E18
3
GND
PWM
R22
E7
OPT INTVCC
0603
GND
E22
Rc
0
Cc
22nF
CUSTOMER NOTICE
NOTE: UNLESS OTHERWISE SPECIFIED
A
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.
ALL CAPACITORS ARE 0603.
ALL RESISTORS ARE 0402.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
PCB DES.
TECHNOLOGY
HZ
APP ENG.
KEITH S.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
FOUR - SWITCH BUCK-BOOST LED DRIVER CONTROLLER
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LT3791EFE
3
DC1666A
Wednesday, March 07, 2012
SHEET 1
1
OF 1
A
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