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MCP1602 Scheda tecnica(PDF) 16 Page - Microchip Technology

Il numero della parte MCP1602
Spiegazioni elettronici  2.0 MHz, 500 mA Synchronous Buck Regulator with Power-Good
PDF  26 Pages
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Produttore elettronici  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP1602 Scheda tecnica(HTML) 16 Page - Microchip Technology

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MCP1602
DS22061A-page 16
© 2007 Microchip Technology Inc.
5.8
PCB Layout Information
Good printed circuit board layout techniques are
important to any switching circuitry and switching
power supplies are no different. When wiring the high
current paths, short and wide traces should be used.
This high current path is shown with red connections in
Figure 5-1.
Therefore,
it
is
important
that
the
components along the high current path should be
placed as close as possible to the MCP1602 to
minimize the loop area.
The feedback resistors and feedback signal should be
routed away from the switching node and this switching
current loop. When possible ground planes and traces
should be used to help shield the feedback signal and
minimize noise and magnetic interference.
FIGURE 5-1:
PCB High Current Path.
SHDN
VCC
PG
AGND
VFB
VIN
LX
PGND
1
2
3
4
8
7
6
5
ON
OFF
MCP1602
VIN
2.7V to 4.5V
VOUT
1.5V @ 500 mA
VIN
RPULLUP
4.7 µF
4.7 µH
4.7 µF
0.1 µF
10
Ω
Processor
Reset



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