Diodes AP2121 - Manual (Page 24)

Data Sheet
24
Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121
Typical Application
Figure 25. Typical Application of AP2121
Note: Filter capacitors are required at the AP2121's input and output. 1 μF capacitor is required at the input. The
minimum output capacitance required for stability should be more than 1 μF with ESR from 0.01Ω to 100Ω.
Ceramic capacitors are recommended.
V
IN
AP2121-1.2
C
IN
1 μF
C
OUT
1 μF
V
OUT
V
IN
V
OUT
GND
V
IN
AP2121-3.0
C
IN
1 μF
C
OUT
1 μF
V
OUT
V
IN
V
OUT
GND
CE NC
V
IN
=2.2V V
OUT
=1.2V
V
OUT
=3V V
IN
=4V