Datasheet

LT8410/LT8410-1
11
84101fb
Board Layout Considerations
As with all switching regulators, careful attention must
be paid to the PCB layout and component placement. To
maximize efficiency, switch rise and fall times are made as
short as possible. To prevent electromagnetic interference
(EMI) problems, proper layout of the high frequency
switching path is essential. The voltage signal of the SW pin
has sharp rising and falling edges. Minimize the length and
area of all traces connected to the SW pin and always use
a ground plane under the switching regulator to minimize
interplane coupling. In addition, the FBP pin and V
REF
pin
are sensitive to noise. Minimize the length and area of all
traces to these two pins is recommended. Recommended
component placement is shown in Figure 3.
APPLICATIONS INFORMATION
CAPACITOR GROUNDS MUST BE
RETURNED DIRECTLY TO IC GROUND
8410-1 F03
SHDN
GND
V
IN
SHDN
V
CC
GND
SW
FBP
CAP
V
REF
V
OUT
Figure 3. Recommended Board Layout