Diodes AP3427M - Manual (Page 9)

Preliminary Datasheet
Dual 1A, 1.5MH
Z
Synchronous Step-down DC-DC Converter AP3427M
Mar. 2013 Rev. 1.0 BCD Semiconductor Manufacturing Limited
9
Typical Application
V
IN
= 2.5 V to 5.5V
C
IN2
4.7µF
R1
R2
C
OUT1
10 µF
L 1 2.2µH
C1
option
V
OUT1
A
P
3
427
M
GND
FB1
LX1 EN1
VIN2
LX2 EN2
GND
FB2
VIN1
1 10
9
8
7 4
5 6
2
3 Connected
to V
IN
C
IN1
4.7µF
R3
R4
C
OUT2
10µF
L 2 2.2µH
C2
option
V
OUT2
Note 2: V
OUT1
=V
FB1
×(1+R
1
/R
2
) ; V
OUT2
=V
FB2
×(1+R
3
/R
4
), and R2=R4=10k
Ω is recommended.
Figure 14. Typical Application of AP3427M (Note 2)