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FP6745CS6C bảng dữ liệu(PDF) 6 Page - Fitipower Integrated Technology Inc.

tên linh kiện FP6745CS6C
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Trang chủ  http://www.fitipower.com/en_US/index.asp
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FP6745CS6C bảng dữ liệu(HTML) 6 Page - Fitipower Integrated Technology Inc.

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FP6745C-0.1-SEP-2011
FP6745C
85T
fitipower integrated technology lnc.
Applications Information (Continued)
Layout Consideration
The proper PCB layout and component placement
are critical for all switching regulators.
The careful
attention should be taken to the high-frequency, high
current loops to prevent electromagnetic interference
(EMI) problems.
Here are some suggestions to the
layout of FP6745C design.
a. The input capacitor should be located as closed as
possible to the VIN and GND pin.
b. Minimize the distance of all traces connected to the
SW node.
The external components, COUT, L1,
and D1 should be placed as close to the device as
possible with short and wide route to obtain
optimum efficiency.
c. Keep the noise-sensitive feedback circuitry away
from the switching node.
Place feedback resistor
as close as possible to FB pin.
d. The ground terminal of COUT must be located as
closed as possible to GND pin.
Place COUT next
to Schottky diode.
In Backlight application, the system
engineers
usually place the COUT close to the LED connector.
The far COUT of the FP6745C may result in variable
VFB.
Add one more COUT close to FP6745C is
recommended.



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