Diodes AP3003 - Manual (Page 13)

150kHz 3A BUCK DC-DC CONVERTER AP3003
Data Sheet
13
Aug. 2008 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Typical Application (Continued)
Figure 20. Typical Application of AP3003-ADJ
Figure 19. Typical Application of AP3003-12V
L1: Sumida CDRH127/LDNP-220MC or Equivalent
L1: Sumida CDRH127/LDNP-220MC or Equivalent
+ +
L1
22
µH
D1
1N5822
C
OUT
ON/OFF GND
V
IN OUTPUT
FEEDBACK
220
µF
C
IN
470
µF
24V
Unregulated
DC Input
Regulated
DC Output
3A Load
AP3003-12V
4
2
5 3
1
+ +
L1
22
µH
D1
1N5822
C
OUT
ON/OFF GND
V
IN OUTPUT
FEEDBACK
220
µF
C
IN
470
µF
12V
Unregulated
DC Input
2.5V
Regulated
DC Output
3A Load
R1
3.6k
R2
3.69k
AP3003-ADJ
4
2
5 3
1
C
FF
33nF
V
OUT
=1.23 * (R2+R1)
R1