Datasheet

ADP7104 Data Sheet
Rev. F | Page 14 of 28
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0 0.25 0.50 0.75 1.00 1.25 1.50
PSRR (dB)
HEADROOM VO
LT
AGE (V)
LOAD = 500mA
LOAD = 300mA
LOAD = 100mA
LOAD = 10mA
LOAD = 1mA
09507-042
Figure 47. Power Supply Rejection Ratio vs. Headroom Voltage, 100 kHz,
V
OUT
= 5 V
5
0
10
15
20
25
30
0.010.0010.00010.00001 0.1
1
NOISE (µV rms)
LOAD CURRENT (A)
3.3V
1.8V
5V
5V
ADJ
5V
ADJ
NR
09507-043
Figure 48. Output Noise vs. Load Current and Output Voltage,
C
OUT
= 1 μF
FREQUENCY (Hz)
0.01
0.1
1
10
10 100 1k 10k 100k
NOISE (µV/√Hz)
3.3V
5V
5V
ADJ
5V
ADJ
NR
09507-044
Figure 49. Output Noise Spectral Density, I
LOAD
= 10 mA, C
OUT
= 1 μF
CH2 50mVCH1 500mA M 20µs A CH1 270mA
1
2
T 10%
Ω
LOAD CURRENT
OUTPUT VOLTAGE
09507-045
B
W
B
W
Figure 50. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 500 mA,
V
OUT
= 1.8 V, V
IN
= 5 V
CH2 50mVCH1 500mA M 20µs A CH1 280mA
1
2
T 10.2%
Ω
LOAD CURRENT
OUTPUT VOLTAGE
09507-046
B
W
B
W
Figure 51. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 500 mA,
V
OUT
= 3.3 V, V
IN
= 5 V
CH2 50mVCH1 500mA M 20µs A CH1 300mA
1
2
T 10.2%
Ω
LOAD CURRENT
OUTPUT VOLTAGE
09507-047
B
W
B
W
Figure 52. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 500 mA,
V
OUT
= 5 V, V
IN
= 7 V