Diodes AP1501A - Manual (Page 2)

AP1501A
150KHz, 5A PWM BUCK DC/DC CONVERTER
AP1501A Rev. 10 2 of 14 SEPTEMBER 2009
DS31191 www.diodes.com © Diodes Incorporated
Typical Application Circuit
(Continued)
(2) Adjustable Type Circuit
1 2
3 5
4 12V
DC Input
Cin
Capacitor
FB
SD
D1
Schottky Diode
Vin
Gnd
Output
AP1501A
Co
Capacitor
L1
22uH
5V/ 5A
Output Load
R2 R1
V
out
= V
FB
×
(1 +
R2
R1
)
V
FB
= 1.23V
R2 = 1K ~ 3K
(3) Delay Start Circuit
1 2
3 5
4 12V
DC Input
Cin
Capacitor
FB
SD
D1
Schottky Diode
Vin
Gnd
Output
AP1501A
Co
Capacitor
L1
22uH
5V/ 5A
Output Load
R2 R1
C
DELAY
0.1uF
10K
R
DELAY