LTC1735C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1735C' PDF : 32 Pages View PDF
LTC1735
APPLICATIO S I FOR ATIO
the INTVCC and PGND pins can help improve noise
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
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.
COSC
M1
1
16
COSC
TG
CSS
2
15
RUN/SS BOOST
RC CC
CC2
3
ITH
14
SW
LTC1735
4
FCB
13
VIN
5
SGND
12
INTVCC
DB
CB
47pF
6
VOSENSE
11
BG
+
4.7µF
7 SENSE–
10
PGND
1000pF
8 SENSE+
9
EXTVCC
L1
CIN
D1
M2
R1
COUT
R2
RSENSE
+
VIN
–
–
VOUT
+
1735 F12
Figure 12. LTC1735 Layout Diagram
HIGH CURRENT PATH
1735 F13
SENSE + SENSE –
CURRENT SENSE
RESISTOR
(RSENSE)
Figure 13. Kelvin Sensing RSENSE
1735fc
27
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