Datasheet

Data Sheet ADP151
Rev. E | Page 9 of 24
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
200mA
100mA
10mA
1mA
100µA
08627-017
Figure 19. Power Supply Rejection Ratio vs. Frequency, V
OUT
= 3.3 V, V
IN
= 3.8 V
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
V
OUT
= 3.3V, I
OUT
= 200mA
V
OUT
= 3.3V, I
OUT
= 10mA
V
OUT
= 2.8V, I
OUT
= 200mA
V
OUT
= 2.8V, I
OUT
= 10mA
V
OUT
= 1.1V, I
OUT
= 200mA
V
OUT
= 1.1V, I
OUT
= 10mA
08627-018
Figure 20. Power Supply Rejection Ratio vs. Frequency at Various Output Voltages
and Load Currents, V
OUT
− V
IN
= 0.5 V, except for V
OUT
= 1.1 V, V
IN
= 2.2 V
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
I
OUT
= 200mA, V
IN
= 3.3V
I
OUT
= 10mA, V
IN
=3.3V
I
OUT
= 200mA, V
IN
= 3.8V
I
OUT
= 10mA, V
IN
= 3.8V
08627-019
Figure 21. Power Supply Rejection Ratio vs. Frequency at Various Voltages
and Load Currents, V
OUT
= 2.8 V
14
0
1
2
3
4
5
6
7
8
9
10
11
12
13
0.001 0.01 0.1 1 10 100 1k
NOISE (µV rms)
LOAD CURRENT (mA)
3.3V
2.8V
1.2V
1.1V
08627-020
Figure 22. Output Noise vs. Load Current and Output Voltage,
V
IN
= 5 V, C
OUT
= 1 μF
1000
10
100
10 100k10k1k100
NOISE SPECTRAL DENSITY (nV/ Hz)
FREQUENCY (Hz)
3.3V
2.8V
1.2V
1.1V
08627-021
Figure 23. Output Noise Spectral Density vs. Frequency,
V
IN
= 5 V, I
LOAD
= 10 mA, C
OUT
= 1 μF
CH1 200mA CH2 50mV M20µs A CH1 64.0mA
T 10.00%
1
2
T
LOAD CURRENT
V
OUT
08627-022
Figure 24. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 200 mA