
Data Sheet
18
May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2122
Typical Application
Figure 22. Typical Application of AP2122
Note: Filter capacitors are required at the AP2122's input and output. 1µF capacitor is required at the input. The
minimum output capacitance required for stability should be more than 1µF with ESR from 0.01Ω to 100Ω.
Ceramic capacitors are recommended.
V
IN
AP2122-3.0
C
IN
1µF
C
OUT
1µF
V
OUT
V
IN
V
OUT
GND
CE
NC
V
IN
=4V V
OUT
=3V
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