MCP1602 Microchip Technology Inc., MCP1602 Datasheet - Page 16

• Manufacturer Part Number: MCP1602
• Description: 2.0 Mhz, 500 Ma Synchronous Buck Regulator With Power-good
• Manufacturer: Microchip Technology Inc.

MCP1602
5.8
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
FIGURE 5-1:
DS22061A-page 16
2.7V to 4.5V
5-1. Therefore, it is important that the
V
IN
4.7 µF
PCB Layout Information
0.1 µF
PCB High Current Path.
OFF
10Ω
ON
6
2
4
1
V
V
A
SHDN
IN
CC
GND
MCP1602
P
GND
V
PG
L
FB
X
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.
3
7
5
8
R
PULLUP
V
4.7 µH
IN
© 2007 Microchip Technology Inc.
Processor
Reset
4.7 µF
1.5V @ 500 mA
V
OUT