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AP6015 Fiches technique(PDF) 14 Page - Diodes Incorporated

No de pièce AP6015
Description  High Efficiency Step-Down Low Power DC-DC Converter
PDF  18 Pages
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Fabricant  DIODES [Diodes Incorporated]
Site Internet  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP6015 Fiches technique(HTML) 14 Page - Diodes Incorporated

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AP6015
High Efficiency Step-Down Low Power DC-DC Converter
AP6015 Rev. 3
14 of 18
FEBRUARY 2009
www.diodes.com
© Diodes Incorporated
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
Application Information
(Continued)



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