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AP6015 データシート(PDF) 14 Page - Diodes Incorporated

部品番号 AP6015
部品情報  High Efficiency Step-Down Low Power DC-DC Converter
PDF  18 Pages
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メーカー  DIODES [Diodes Incorporated]
ホームページ  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP6015 データシート(HTML) 14 Page - Diodes Incorporated

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AP6015
High Efficiency Step-Down Low Power DC-DC Converter
AP6015 Rev.
2
14 of 18
AUGUST 2008
www.diodes.com
© Diodes Incorporated
Application Information
(Continued)
Inductor Selection
In order to avoid saturation of the inductor, the inductor should be rated at least for the maximum output
current plus the inductor ripple current which is calculated as:
f
L
V
V
V
I
CC
O
O
L
×
−
×
=
Δ
)
(
1
2
)
(
)
(
L
MAX
O
MAX
L
I
I
I
Δ
+
=
Where:
f= Switching frequency (1MHz typical)
L = Inductor value
△IL = Peak-to-peak inductor ripple current
IL(max) = Maximum inductor current
Vcc=3.6V
Vout=2.5V
f=1MHz
L=3.3uH
△IL≒230mA
Vcc=3.6V
Vout=2.5V
f=1MHz
L=1.8uH
△IL≒360mA



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