ap2121ak-3.3tre1 BCD Semiconductor Manufacturing Limited, ap2121ak-3.3tre1 Datasheet - Page 20

• Manufacturer Part Number: ap2121ak-3.3tre1
• Description: High Speed, Extremely Low Noise Ldo Regulator
• Manufacturer: BCD Semiconductor Manufacturing Limited

Typical Application
Note: Filter capacitors are required at the AP2121'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.
May 2008 Rev. 2. 0
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
V
V
IN
IN
V
V
IN
IN
=2.2V
=4V
C
1µF
C
1µF
Figure 22. Typical Application of AP2121
IN
IN
GND
GND
AP2121-1.2
V
AP2121-3.0
V
CE
IN
IN
20
V
V
NC
OUT
OUT
BCD Semiconductor Manufacturing Limited
V
1µF
1µF
C
V
C
OUT
OUT
OUT
OUT
=1.2V
=3V
V
V
OUT
OUT
Data Sheet
AP2121