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AP1509-XXS 데이터 시트보기 (PDF) - Diodes Incorporated.
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AP1509-XXS
150KHz, 2A PWM BUCK DC/DC CONVERTER
Diodes Incorporated.
AP1509-XXS Datasheet PDF : 12 Pages
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AP1509
150KHz, 2A PWM BUCK DC/DC CONVERTER
Typical Application Circuit
(1) Fixed Type Circuit
12V
DC Input
C
in
Capacitor
FB
1
V
in
4
3
AP1509
-33
2
5 6 78
Output
L1
47uH
Inductor
SD GNDGNDGNDGND
D1
Schottky Diode
3.3V/2A
Output Load
Co
Capacitor
(2) Adjustable Type Circuit
12V
DC Input
Cin
Capacitor
R2 1K
R1 1K
FB
3
1
AP1509
Vin
Output
2
L1
39uH
Inductor
4 56 78
SD Gnd GndGnd Gnd
D1
Schottky
Diode
2.5V/2A
Output Load
Co
Capacitor
(3) Delay Start Circuit
12V
DC Input
Cin
Capacitor
V
out
= V
FB
×
(1 +
R1
)
R2
V
FB
= 1.23V
R2 = 1K ~ 3K
R2 1K
R1 1K
FB
3
Vin
Output
1
AP1509
2
C
DELAY
4
0.1uF
56
78
SD Gnd GndGnd Gnd
R
DELAY
10K
L1
39uH
Inductor
D1
Schottky
Diode
2.5V/2A
Output Load
Co
Capacitor
AP1509 Rev. 1
6 of 12
www.diodes.com
DECEMBER 2006
©
Diodes Incorporated
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