Preliminary Datasheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
AP2121
Typical Performance Characteristics (Continued)
AP2121-3.0
6
5
4
4.5
3.5
2.5
AP2121-1.5
0.05
0
0.05
0
-0.05
-0.05
Time (20µs/Div)
Time (40µs/Div)
Figure 17. Line Transient
Figure 16. Line Transient
(Conditions: IOUT=30mA, CIN=1µF, COUT=1µF)
(Conditions: IOUT=30mA, CIN=1µF, COUT=1µF)
AP2121-3.0
AP2121-1.5
3.1
1.6
3.0
2.9
1.5
1.4
200
100
0
100
50
0
Time (200µs/Div)
Time (200µs/Div)
Figure 19. Load Transient
Figure 18. Load Transient
(Conditions: VIN=4V, CIN=1µF, COUT=1µF)
(Conditions: VIN=2.5V, CIN=1µF, COUT=1µF)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
16