Diodes AUR9707 - Manual (Page 13)

Data Sheet
Dual High-efficiency PWM Step-down DC-DC Converter with OVP AUR9707
Feb. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
13
Typical Application
Note 3: ) 1 (
2
1
1
R
R
V V
REF OUT
+ × =
; )
R
R
1 ( V V
4
3
REF 2 OUT
+ × =
When R2 or R4=300k Ω to 60 kΩ, the I
R2
or I
R3
=2 µA to 10µA , and R1×C1 or R3×C2 should be in the range between
3 ×10 -6 and 6×10 -6 for component selection.
Figure 23. Typical Application Circuit of AUR9707
V
OUT1
or V
OUT2
(V) R1 or R3(k
Ω)
R2 or R4(k
Ω)
C1 or C2(pF) L1 or L2(
µH)
3.3 240 53 20 2.2
2.5 240 75 20 2.2
1.8 240
120 20 2.2
1.5 240 160 20 2.2
1.2 240 240 20 2.2
1.0 240 300 20 2.2
Table 1. Component Guide