Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2125
Typical Performance Characteristics (Continued)
AP2125-3.3
AP2125-1.8
5
4.8
3.8
4.5
4
2.8
0.02
0
0.05
0
-0.02
-0.05
Time (100µs/Div)
Time (40µs/Div)
Figure 29. Line Transient
Figure 28. Line Transient
(Conditions: IOUT=30mA, COUT=1µF, VIN=4 to 5V)
(Conditions: IOUT=30mA, COUT=1µF, VIN=2.8 to 3.8V)
AP2125-1.8
AP2125-3.3
1.84
3.34
3.32
3.3
1.82
1.8
100
50
0
100
50
0
Time (40µs/Div)
Time (40µs/Div)
Figure 31. Load Transient
Figure 30. Load Transient
(Conditions: IOUT=10 to 100mA, CIN=1µF,
COUT=1µF, VIN=2.8 V)
(Conditions: IOUT=10 to 100mA, CIN=1µF,
COUT=1µF, VIN=4.3 V)
May. 2010 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
19