1507-12 Просмотр технического описания (PDF) - Diodes Incorporated.
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1507-12 Datasheet PDF : 12 Pages
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AP1507
150KHz, 3A PWM BUCK DC/DC CONVERTER
Typical Application Circuit
(1) Fixed Type Circuit
12V
DC Input
Cin
Capacitor
FB
4
1
Vin
AP1507
-33
2
5
3
Output
SD
GND
L1
33uH
Inductor
D1
Schottky
Diode
3.3V/3A
Output Load
Co
Capacitor
(2) Adjustable Type Circuit
12V
DC Input
Cin
Capacitor
R2
R1
FB
4
1 AP1507 2
Vin
5
3
Output
SD
GND
L1
47uH
D1
Schottky Diode
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 AP1507 2
Vin
CDELAY 5
3
0.1uF SD
GND
RDELAY
10K
L1
47uH
D1
Schottky Diode
5V/ 3A
Output Load
Co
Capacitor
AP1507
Document number: DS31067 Rev. 3 - 2
2 of 12
www.diodes.com
May 2012
© Diodes Incorporated
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