AP1501 Ver la hoja de datos (PDF) - Diodes Incorporated.
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AP1501 Datasheet PDF : 12 Pages
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AP1501
150KHz, 3A PWM BUCK DC/DC CONVERTER
Typical Application Circuit
(1) Fixed Type Circuit
12V
DC Input
Cin
Capacitor
FB
4
1
Vin
AP1501
-33
2
Output
5
3
SD
Gnd
L1
33uH
Inductor
D1
B340A
3.3V/3A
Output Load
Co
Capacitor
(2) Adjustable Type Circuit
R2
R1
12V
DC Input
Cin
Capacitor
FB
1
Vin
4
AP1501
Output
2
5
3
SD
Gnd
L1
47uH
D1
(Note 5)
5V/ 3A
Output Load
Co
Capacitor
(3) Delay Start Circuit
12V
DC Input
Cin
Capacitor
Vout = VFB × (1 + R1 )
R2
VFB = 1.23V
R2 = 1K ~ 3K
R2
R1
FB
4
Output
1 AP1501 2
Vin
CDELAY 5
0.1uF SD
3
Gnd
RDELAY
10K
L1
47uH
D1
(Note 5)
Notes: 5. Suggested DIODES Power Schottky: B340A or PDS340 series.
AP1501 Rev. 11
8 of 12
www.diodes.com
5V/ 3A
Output Load
Co
Capacitor
JANUARY 2009
© Diodes Incorporated
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