Datasheet

30
LTC1735
1735fc
Dual Output 15W 3.3V/5V Power Supply
TYPICAL APPLICATIO S
U
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C
OSC
RUN/SS
I
TH
FCB
SGND
V
OSENSE
SENSE
–
SENSE
+
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
LTC1735
C
SS
0.1µF
C
B
0.1µF
C
C2
220pF
100pF
C
C
470pF
R
C
33k
R
SENSE
0.012Ω
V
OUT
5V
3.5A
V
OUT2
12V
120mA
UNREG
1000pF
C
OSC
51pF
+
4.7µF
+
C
OUT
100µF
10V
×3
AVX
+
C
SEC
22µF
35V
AVX
M1
Si4802DY
M2
Si4802DY
1735 TA04
+
C
IN
22µF
30V
OS-CON
D
B
CMDSH-3
R2
105k
1%
C
IN
: SANYO OS-CON 30SC22M
C
OUT
: AVX TPSD107M010R0068
T1: 1:8 DALE LPE6562-A262
R1
20k
1%
MBRS140T3
V
IN
5.5V TO 28V
T1
1:1.8
10µH
SGND
MBRS1100T3
22Ω
1000pF
10k
100Ω
100Ω
140k
5V/3.5A Converter with 12V/200mA Auxiliary Output
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C
OSC
RUN/SS
I
TH
FCB
SGND
V
OSENSE
SENSE
–
SENSE
+
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
LTC1735
C
SS
0.1µF
C
B
0.1µF
0.01µF
C
C2
100pF
100pF
C
C
470pF
R
C
33k
R
SENSE
0.01Ω
V
OUT1
3.3V
2.5A
1000pF
C
OSC
47pF
+
4.7µF
+
C
OUT1
100µF
10V
×2
C
OUT2
100µF
10V
×2
V
OUT2
5V
1.5A
M1
Si4412DY
M2
Si4412DY
M3
Si4412DY
1735 TA08
C
IN
22µF
50V
D
B
CMDSH-3
R2
62.6k
1%
C
IN
: MARCON THCR70EIH226ZT
C
OUT1, 2
: AVX TPSD107M010R0065
T1: BI TECHNOLOGIES HM00-93839
R
SENSE
: IRC LRF2512-01-R010 F
R1
20k
1%
MBRS140T3
CMDSH-3
MBRS140T3
V
IN
4.5V TO 28V
T1A T1B
T1C
4.7k
18
•
V
OUT2
27
•
36
•
SGND
+