Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
Typical Performance Characteristics (Continued)
AP2125
AP2125-2.8
3
2
1
0
3
2
1
0
Time (200µs/Div)
Figure 32. Enable Input Response and Auto-discharge
(Conditions: VCE=0 to 3V, CIN=1µF,
COUT=1µF, VIN=3V, no load)
1000
100
AP2125-1.8
C = 1µF
IN
C = 1µF
OUT
10
Stable Area
1
0.1
0
50
100
150
200
250
300
Output Current (mA)
Figure 33. ESR vs. Output Current
100
90
80
70
60
50
40
30
20
10
0
10
AP2125-1.8
V =2.8V
IN
I =30mA
OUT
100
1k
10k
100k
Frequency (Hz)
Figure 34. PSRR
100
90
80
70
60
50
40
30
20
10
0
10
AP2125-3.3
V =4.3V
IN
I =30mA
OUT
100
1k
10k
100k
Frequency (Hz)
Figure 35. PSRR
May. 2010 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
20