Diodes AP2202 - Manual (Page 23)

150mA RF ULDO REGULATOR AP2202
Data Sheet
23
Jul. 2011 Rev. 2. 2 BCD Semiconductor Manufacturing Limited
Figure 21. Typical Application of AP2202 (Note 7)
BYP
100pF
EN
GND
AP2202-2.8 V
IN
=3.8V V
OUT
=2.8V
2.2 µF 1.0 µF
V
IN
V
IN
V
OUT
V
OUT
C
OUT
C
BYP
C
IN
Typical Application
ADJ EN GND
AP2202-ADJ
R1
R2
optional
V
OUT
=1.25* (1+R2/R1)
V
IN
1.0 µF 2.2 µF
V
IN
C
IN
V
OUT
V
OUT
C
OUT
C
BYP
Note 7: Dropout voltage is 165mV when T
A
=25 o C. In order to obtain a normal output voltage, V
OUT
+0.165V is the minimum
input voltage which will result a low PSRR, imposing a bad influence on system. Therefore, the recommended input voltage
is V
OUT
+0.5V to 13.2V. For AP2202-2.8 version, its input voltage can be set from 3.3V(V
OUT
+0.5V) to 13.2V. For that of
Adj version, any value from V
OUT
+0.5V to 13.2V is available. R1 and R2 must be correctly selected when setting the output
voltage. For example, if 3.0V output voltage is required, R1 and R2 can be set to 10k Ω and 14kΩ respectively. For Adj ver-
sion, we recommend 2.3V as minimum output voltage.