Datasheet

REV. A
ADP3331
–5–
3.040
3.000
2.960
2.920
7.5
7.0
0 100 200 300 400 500
TIME (␮s)
V
OUT
(V)V
IN
(V)
V
OUT
= 3V
R
L
= 15⍀
C
L
= 0.47␮F
TPC 10. Line Transient Response
3.100
3.050
3.000
2.950
2.900
200
100
0
0 200 400 600 800 1000
VmA
TIME
(␮
s
)
V
IN
= 7V
V
OUT
= 3V
C
L
= 10␮F
20mA
TPC 13. Load Transient Response
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
0
10
100 1k 10k 100k 1M 10M
–10
–20
–30
–40
–50
–60
–70
–80
–90
C
L
= 0.47␮F
I
L
= 0.1mA
C
L
= 0.47␮F
I
L
= 200mA
C
L
= 10␮F
I
L
= 200mA
C
L
= 10␮F
I
L
= 0.1mA
V
OUT
= 3.0V
TPC 16. Power Supply Ripple
Rejection
3.040
3.000
2.960
2.920
7.5
7.0
0 100 200 300 400 500
TIME (␮s)
V
OUT
(V)V
IN
(V)
V
OUT
= 3V
R
L
= 15⍀
C
L
= 10␮F
TPC 11. Line Transient Response
3
0
500
400
300
200
100
0
VmA
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (Sec)
V
OUT
I
OUT
V
IN
= 7V
TPC 14. Short Circuit Current
120
160
05010 20 30 40
100
80
60
140
C
L
(␮F)
RMS NOISE (␮V)
40
20
0
I
L
= 0mA WITH NOISE REDUCTION
I
L
= 200mA
I
L
= 200mA
WITH NOISE REDUCTION
I
L
= 0mA
TPC 17. RMS Noise vs. C
L
(10 Hz to 100 kHz)
3.100
3.050
3.000
2.950
2.900
200
100
0
0 200 400 600 800 1000
VmA
TIME
(␮
s
)
V
IN
= 7V
V
OUT
= 3V
C
L
= 0.47␮F
20mA
TPC 12. Load Transient Response
3
2
1
0
0
2
0
3
V
V
OUT
V
ERR
V
SD
0 200 400 600 800 1000
TIME (␮s)
V
IN
= 7V
V
OUT
= 3V
C
L
= 10␮F
R
L
= 15⍀
TPC 15. Turn On–Turn Off Response
FREQUENCY (Hz)
VOLTAGE NOISE SPECTRAL
DENSITY (␮V/ Hz)
1
0.01
10 100 1M
0.1
1k 10k 100k
V
OUT
= 3.0V
I
L
= 200mA
C
L
= 0.47␮F
C
NR
= 0
C
L
= 10␮F
C
NR
= 0
C
L
= 0.47␮F
C
NR
= 10nF
C
L
= 10␮F
C
NR
= 10nF
TPC 18. Output Noise Density