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AP1507 Datasheet(PDF) 7 Page - Diodes Incorporated

Part No. AP1507
Description  150KHz, 3A PWM BUCK DC/DC CONVERTER
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Maker  DIODES [Diodes Incorporated]
Homepage  http://www.diodes.com
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AP1507 Datasheet(HTML) 7 Page - Diodes Incorporated

 
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AP1507
150KHz, 3A PWM BUCK DC/DC CONVERTER
AP1507 Rev. 1
7 of 10
FEBRUARY 2007
www.diodes.com
© Diodes Incorporated
Typical Application Circuit
(1) Fixed Type Circuit
12
3
5
4
12V
DC Input
Cin
Capacitor
FB
SD
D1
Schottky
Diode
Vin
GND
Output
AP1507
-33
Co
Capacitor
Inductor
L1
33uH
3.3V/3A
Output Load
(2) Adjustable Type Circuit
12
3
5
4
12V
DC Input
Cin
Capacitor
FB
SD
D1
Schottky Diode
Vin
GND
Output
AP1507
Co
Capacitor
L1
47uH
5V/ 3A
Output Load
R2
R1
Vout = VFB × (1 +
R2
R1
)
VFB = 1.23V
R2 = 1K ~ 3K
(3) Delay Start Circuit
12
3
5
4
12V
DC Input
Cin
Capacitor
FB
SD
D1
Schottky Diode
Vin
GND
Output
AP1507
Co
Capacitor
L1
47uH
5V/ 3A
Output Load
R2
R1
CDELAY
0.1uF
10K
RDELAY


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