Diodes AUR9718B - Manual (Page 16)

Data Sheet
1.5MHz, 2.5A, Step-down DC-DC Converter AUR9718B
Nov. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
16
Typical Application
SW
GND
EN VIN_A
VIN_SW
L : 3.3 H 3A
C
IN
4.7 F 10V X 7R
C
OUT
22 F 10V X7R
V
OUT
=1.2V
R2 10K 1%
R1
5K 1%
V
IN
2.7 to 5.5V
FB
AUR9718B
=
2 1
3 4
5 6
Note 2: ) 1 (
2
1
R
R
V V
FB OUT
+ × =
Figure 34. Typical Application Circuit of AUR9718B (Note 2)
Table 1. Component Guide
V
OUT
(V) R1 (k
Ω) R2
(k
Ω) L
(
µH)
3.3 31.25 10 3.3
2.5 21.5 10 3.3
1.8 12.5 10 3.3
1.2 5 10
3.3
1.0 3 10 3.3