LTC1735 Linear Technology, LTC1735 Datasheet - Page 26

• Manufacturer Part Number: LTC1735
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
LTC1735
the INTV
performance.
6) Keep the switching node (SW), top gate node (TG) and
boost node (BOOST) away from sensitive small-signal
nodes, especially from the voltage and current sensing
26
CC
and PGND pins can help improve noise
U
C
C
R
SS
C2
C
1000pF
U
47pF
C
C
C
OSC
1
2
3
4
5
6
7
8
W
C
RUN/SS
I
FCB
SGND
V
SENSE
SENSE
TH
OSC
OSENSE
LTC1735
–
+
Figure 12. LTC1735 Layout Diagram
Figure 13. Kelvin Sensing R
EXTV
INTV
BOOST
PGND
U
SW
V
BG
TG
CC
CC
IN
16
15
14
13
12
11
10
9
HIGH CURRENT PATH
R1
R2
SENSE
+
+
+
SENSE
C
4.7 F
feedback pins. All of these nodes have very large and fast
moving signals and therefore should be kept on the
“output side” (Pin 9 to Pin 16) of the LTC1735 and occupy
minimum PC trace area.
OUT
D
B
–
M1
C
SENSE
B
CURRENT SENSE
RESISTOR
(R
SENSE
R
L1
SENSE
1735 F13
)
D1
M2
C
IN
1735 F12
V
V
OUT
+
–
–
+
IN