Datasheet

Data Sheet ADP150
Rev. B | Page 9 of 20
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
I
OUT
= 100µA
I
OUT
= 1mA
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 150mA
08343-017
V
IN
= V
OUT
+ 0.5V
V
RIPPLE
= 50mV
C
IN
= C
OUT
= 1µF
Figure 17. Power Supply Rejection Ratio (PSRR) vs. Frequency,
V
OUT
= 3.3 V, V
IN
= 3.8 V
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k
10k 100k
1M 10M
PSRR (dB)
FREQUENCY (Hz)
V
OUT
= 1.8V, I
OUT
= 100µA
V
OUT
= 2.8V, I
OUT
= 100µA
V
OUT
= 3.3V, I
OUT
= 100µA
V
OUT
= 1.8V, I
OUT
= 150mA
V
OUT
= 2.8V, I
OUT
= 150mA
V
OUT
= 3.3V, I
OUT
= 150mA
08343-018
V
IN
= V
OUT
+ 0.5V
V
RIPPLE
= 50mV
C
IN
= C
OUT
= 1µF
Figure 18. Power Supply Rejection Ratio (PSRR) vs. Frequency
Various Output Voltages and Load Currents
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
V
IN
= 3.8V, I
OUT
= 1mA
V
IN
= 4.3V, I
OUT
= 1mA
V
IN
= 5.3V, I
OUT
= 1mA
V
IN
= 3.8V, I
OUT
= 150mA
V
IN
= 4.3V, I
OUT
= 150mA
V
IN
= 5.3V, I
OUT
= 150mA
08343-019
V
RIPPLE
= 50mV
C
IN
= C
OUT
= 1µF
Figure 19. Power Supply Rejection Ratio (PSRR) vs. Frequency with
Various Headroom Voltages (V
IN
− V
OUT
), V
OUT
= 3.3 V
15
13
11
9
7
5
3
1
0.001 0.01 0.1
1 10
100
1k
RMS NOISE (µV)
I
OUT
(mA)
V
OUT
= 3.3V
V
OUT
= 2.8V
V
OUT
= 1.8V
08343-021
Figure 20. Output RMS Noise vs. Load Current (I
OUT
) and
Output Voltage (V
OUT
), V
IN
= 5 V, C
OUT
= 1 µF
1
0.01
0.1
10 100
1k 10k
100k
NOISE (µV/ Hz)
FREQUENCY (Hz)
V
OUT
= 1.8V
V
OUT
= 2.8V
V
OUT
= 3.3V
08343-020
Figure 21. Output Noise Spectrum, V
IN
= 5 V, I
LOAD
= 10 mA, C
OUT
= 1 μF
CH1 100mA
CH2 50mV M40µs A CH1 112mA
T 117.560µs
1
2
T
08343-022
I
OUT
1mA TO 150mA LOAD STEP
V
OUT
V
IN
= 3.7V
V
OUT
= 3.3V
Figure 22. Load Transient Response, C
OUT
= 1 µF