Datasheet

16
LTC1435
APPLICATIONS INFORMATION
WUU
U
C
OSC

RUN/SS
I
TH

SFB
SGND
V
OSENSE

SENSE
–

SENSE
+
TG
BOOST
SW
V
IN

INTV
CC

BG
PGND
EXTV
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1435
1000pF
C
C1

470pF
C
C2

51pF
100pF
R
C

10k
C
OSC

68pF
C
SS

0.1µF
+
4.7µF
T1: DALE LPE6562-A236
CMDSH-3
0.1µF
0.01µF
M1
Si4412DY
M2
Si4412DY
LTC1435 • TA04
100Ω
100Ω
+
C
IN

22µF
35V
× 2
MBRS140T3
T1
10µH
1:1.42
R
SENSE

0.033Ω
R1
35.7k
1%
R2
20k
1%
+
C
OUT

100µF
10V
× 2
SGND
V
OUT

5V/3.5A
V
IN
5.4V TO 28V
+
C
SEC

3.3µF
35V
4.7k
IRLL014
11.3k
1%
100k
1%
V
OUT2
12V
120mA
C
OSC
TG
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1435
100pF
1000pF
C
C1
C
C2
R
C
C
OSC
C
SS
+
4.7µF
D
B
D1
C
B

0.1µF
C
IN
M1
M2
L1
R1
R2
R
SENSE
–
+
+
–
V
OUT
V
IN
LTC1435 • F08
BOLD LINES INDICATE 
HIGH CURRENT PATHS
+
C
OUT
+
RUN/SS
I
TH
SFB
SGND
V
OSENSE
SENSE
–
SENSE
+
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
BOOST

Figure 8. LTC1435 Layout Diagram
TYPICAL APPLICATIONS
U
Dual Output 5V and Synchronous 12V Application