Datasheet

ADP1720
Rev. A | Page 8 of 16
0
300
V
DROPOUT
(mV)
11
I
LOAD
(mA)
00
10
250
200
150
100
50
06111-011
4.60
4.9 5.4
V
IN
(V)
Figure 11. Dropout Voltage vs. Load Current
5.05
V
OUT
(V)
5.00
4.95
4.90
4.85
4.80
4.75
4.70
4.65
5.0 5.1 5.2 5.3
I
LOAD
= 50mA
I
LOAD
= 25mA
I
LOAD
= 10mA
I
LOAD
= 1mA
06111-012
Figure 12. Output Voltage vs. Input Voltage (in Dropout)
3.5
0
4.9 5.4
V
IN
(V)
I
GND
(mA)
3.0
2.5
2.0
1.5
1.0
0.5
5.0 5.1 5.2 5.3
I
LOAD
=
50mA
I
LOAD
=
25mA
I
LOAD
=
10mA
I
LOAD
=
1mA
06111-013
Figure 13. Ground Current vs. Input Voltage (in Dropout)
0
–100
10 10M
FREQUENCY (Hz)
PSRR (dB)
100 1k 10k 100k 1M
–10
–20
–30
–40
–50
–60
–70
–80
–90
100µA
10mA
1mA
V
IN
= 8V
V
OUT
= 1.6V
C
OUT
= 1µF
V
RIPPLE
= 50mV
06111-014
Figure 14. Power Supply Rejection Ratio vs. Frequency
(1.6 V Adjustable Output)