ap1507-12d5 Diodes, Inc., ap1507-12d5 Datasheet - Page 8

• Manufacturer Part Number: ap1507-12d5
• Description: 150khz, 3a Pwm Buck Dc/dc Converter
• Manufacturer: Diodes, Inc.

Typical Application Circuit
(1) Fixed Type Circuit
(2) Adjustable Type Circuit
(3) Delay Start Circuit
AP1507 Rev. 2
Capacitor
DC Input
DC Input
Capacitor
Capacitor
DC Input
12V
C
12V
in
12V
C
C
in
in
C
0.1uF
V
DELAY
V
in
V
in
R2
R2
in
1
V
V
R2 = 1K ~ 3K
1
1
out
FB
5
5
5
SD
SD
SD
AP1507
= 1.23V
R
AP1507
AP1507
= V
10K
DELAY
4
-33
4
4
FB
FB
FB
FB
www.diodes.com
×
3
3
3
(1 +
2
2
GND
GND
2
GND
8 of 11
150KHz, 3A PWM BUCK DC/DC CONVERTER
Output
Output
Output
R2
R1
)
Schottky Diode
Schottky Diode
R1
R1
Schottky
Diode
D1
D1
D1
Inductor
47uH
47uH
33uH
L1
L1
L1
Capacitor
Capacitor
Capacitor
Co
Output Load
Co
Output Load
Co
Output Load
5V/ 3A
3.3V/3A
5V/ 3A
FEBRUARY 2008
©
AP1507
Diodes Incorporated