Datasheet
7
dc1666af
DEMO MANUAL DC1666A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
IVINMON
VIN
4.7V - 60V
PVIN
4.7V - 60V
100V
100V
SHORTLED
OPENLED
10V
LED-
GND
LED+
OUT
ISMON
CLKOUT
OVLO
CTRL
EN/UVLO
100V
1206
1210
1210
HC9-100-R
SUMIDA
50V
1210 1210
50V
0603
GND
INTVCC
1210
2010
1206
GND
GND
SYNC
GND
GND
ALL CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
BAT46WJ BAT46WJ
2010
PWM
300kHz
ALL RESISTORS ARE 0402.
2A
100V 100V
OPENLED
PVIN
INTVCC
INTVCC
OPENLED
INTVCC
VREF
VREF
R2
0
R2
0
M2
RJK0651DPB
M2
RJK0651DPB
C17
(OPT)
C17
(OPT)
C18
OPT
C18
OPT
Rc
0
Rc
0
E12E12
C15
4.7uF
50V
1210
C15
4.7uF
50V
1210
M3
RJK0451DPB
M3
RJK0451DPB
C14
2.2uF
1210
C14
2.2uF
1210
D3
OPT
D3
OPT
E2E2
R8
237k
R8
237k
R6
115k
0603
R6
115k
0603
R17
51
R17
51
R7
1M
R7
1M
R12
86.6k
R12
86.6k
E8E8
C2
2.2uF
C2
2.2uF
M5
Si2318DS
M5
Si2318DS
RIN
0.003
RIN
0.003
E11E11
M4
RJK0451DPB
M4
RJK0451DPB
C12
2.2uF
1210
C12
2.2uF
1210
E3E3
E14E14
C9
4.7uF
C9
4.7uF
R14
0
0603
R14
0
0603
E21E21
R22 OPT
0603
R22 OPT
0603
R19
1M
R19
1M
R18
OPT
R18
OPT
D1D1
E7E7
L1 10uHL1 10uH
M1
RJK0651DPB
M1
RJK0651DPB
C8
0.1uF
0402
C8
0.1uF
0402
R21
OPT
R21
OPT
U1
LT3791EFE
U1
LT3791EFE
EN/UVLO
9
SHORTLED
5
OPENLED
4
IVINN
11
CTRL
1
PWM
3
ISP
25
SYNC
34
SS
2
PWMOUT
31
VC
36
RT
35
TEST2
32
IVINMON
8
ISMON
7
IVINP
10
CLKOUT
33
VREF
6
OVLO
38
SNSN
28
SNSP
27
ISN
26
PGND
17
PGND
20
FB
37
TG2
24
SW2
21
BG2
19
BG1
18
SW1
16
TG1
14
BST1
15
BST2
22
NC
23
VIN
12
INTVCC
13
SGND
30
PGND
39
TEST1
29
C3
2.2uF
C3
2.2uF
Cc
22nF
Cc
22nF
C16
(OPT)
C16
(OPT)
C4 470nF
0402
C4 470nF
0402
C11
0.1uF
0402
C11
0.1uF
0402
D4
OPT
D4
OPT
E13E13
R11
54.9k
R11
54.9k
R20 OPTR20 OPT
E15E15
C7
4.7uF
C7
4.7uF
R5
200k
0603
R5
200k
0603
R15 OPTR15 OPT
M6
OPT
M6
OPT
C13
4.7uF
50V
1210
C13
4.7uF
50V
1210
R4
200k
0603
R4
200k
0603
C5
1uF
C5
1uF
Css
10nF
Css
10nF
E10E10
E17E17
D2D2
E20E20
RLED
0.05
RLED
0.05
E22E22
R13
332k
R13
332k
E5E5
E6E6
R10
OPT
R10
OPT
C10
4.7uF
C10
4.7uF
R16 0R16 0
E18E18
R9
44.2k
R9
44.2k
R23 OPT
0603
R23 OPT
0603
RS
0.004
RS
0.004
C6
0.1uF
0402
C6
0.1uF
0402
E16E16
E4E4
E1E1
E9E9
R3
1M
R3
1M
E19E19