AP1506 查看數據表（PDF） - Diodes Incorporated.
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AP1506 Datasheet PDF : 14 Pages
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AP1506
150KHz, 3A PWM BUCK DC/DC CONVERTER
Typical Application Circuit
(1) Fixed Type Circuit
12V
DC Input
CIN
Capacitor
FB
4
1
VIN
AP1506
- 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
C IN
Capacitor
R2
R1
FB
4
1 AP1506 2
VIN
5
3
Output
SD
GND
L1
47uH
D1*
Schottky Diode
5V/ 3A
Output Load
Co
Capacitor
Vout = VFB × (1 + R1 )
R2
VFB = 1.23V
R2 = 1K ~ 3K
(3) Delay Start Circuit
12V
DC Input
CIN
Capacitor
R2
R1
FB
4
1 AP1506 2
VIN
C
DELAY
5
3
Output
0.1uF SD
GND
RDELAY
10K
L1
47uH
D1*
Schottky Diode
5V / 3A
Output Load
Co
Capacitor
Notes: 2. For up to 2A = DFLS230L (Vf = 0.42V)
For up to 3A = B340LA, B340LB (Vf = 0.45V)
AP1506
Document number: DS31015 Rev. 7 - 2
2 of 14
www.diodes.com
June 2010
© Diodes Incorporated
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