Diodes AP2128 - Manual (Page 18)

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128
Data Sheet
18
Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited
100 1000 10000 100000
0
10
20
30
40
50
60
70
80
90
100
PSRR (dB)
Frequency (Hz)
I
OUT
=10mA
I
OUT
=300mA
ripple=1Vpp, C
OUT
=1 µ F, V
OUT
=0.8V
Typical Performance Characteristics (Continued)
Figure 36. Soft Start Time
(Conditions: I
OUT
=0mA, C
IN
=C
OUT
=1 µF,
V
Shutdown
=0 to 2V, V
OUT
=0.8V)
V
OUT
V
Shutdown
Figure 37. PSRR vs. Frequency
Figure 38. PSRR vs. Frequency
100 1000 10000 100000
0
10
20
30
40
50
60
70
80
90
100
PS
RR
(dB
)
Frequency (Hz)
I
OUT
=10mA
I
OUT
=300mA
ripple=1Vpp, C
OUT
=1µF, V
OUT
=3.3V
Figure 39. PSRR vs. Frequency
100 1k 10k 100k
10
20
30
40
50
60
70
PSRR (
dB)
Frequency (Hz)
I
OUT
=10mA
I
OUT
=300mA
V
OUT
=5.2V, C
OUT
=1 µ F, ripple=0.5V pp