Datasheet

ADP7102 Data Sheet
Rev. C | 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
LTAGE (V)
LOAD = 1mA
LOAD = 10mA
LOAD = 100mA
LOAD = 300mA
09506-040
Figure 47. Power Supply Rejection Ratio vs. Headroom Voltage, 10 kHz,
V
OUT
= 5 V
–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 VOLTAGE (V)
LOAD = 1mA
LOAD = 10mA
LOAD = 100mA
LOAD = 300mA
09506-041
Figure 48. Power Supply Rejection Ratio vs. Headroom Voltage, 100 kHz,
V
OUT
= 5 V
0
5
10
15
20
25
30
0.00001
0.0001
0.001 0.01
0.1
1
NOISE (µV rms)
LOAD CURRENT (A)
3.3V
1.8V
5V
5V
ADJ
5V
ADJ
NR
09506-042
Figure 49. Output Noise vs. Load Current and Output Voltage,
C
OUT
= 1 μF
0.01
0.1
1
10
10 100
1k
10k
100k
FREQUENCY
(Hz)
3.3V
5V
5V ADJ
5V ADJ NR
µ
V/
√Hz
09506-043
Figure 50. Output Noise Spectral Density, I
LOAD
= 10 mA, C
OUT
= 1 μF
CH2 50mVCH1 200mA M 20µs A CH1 76mA
1
2
T 10.4%
Ω
B
W
B
W
09506-044
LOAD CURRENT
OUTPUT VOLTAGE
Figure 51. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 300 mA,
V
OUT
= 1.8 V, V
IN
= 5 V
CH1 200mA
CH2 50mV M 20µs
A CH1 168mA
1
2
T 10.2%
B
W
B
W
Ω
09506-045
LOAD CURRENT
OUTPUT VOLTAGE
Figure 52. Load Transient Response, C
IN
, C
OUT
= 1 μF, I
LOAD
= 1 mA to 300 mA,
V
OUT
= 3.3 V, V
IN
= 5 V