Datasheet

ADP124/ADP125 Data Sheet
Rev. C | Page 8 of 20
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
–50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
V
IN
= 3.80
V
IN
= 4.20
V
IN
= 4.40
V
IN
= 5.00
V
IN
= 5.20
V
IN
= 5.40
V
IN
= 5.50
08476-011
Figure 13. Shutdown Current vs. Temperature at Various Input Voltages
0
20
40
60
80
100
120
1 10 100 1000
I
OUT
(mA)
DROPOUT (mV)
08476-012
Figure 14. Dropout Voltage vs. Load Current
0
50
100
150
200
250
300
350
400
450
3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70
V
IN
(V)
I
GND
(µA)
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 500mA
I
OUT
= 10mA
08476-013
Figure 15. Ground Current vs. Input Voltage (in Dropout)
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.00 3.10 3.20 3.30 3.40 3.50 3.60
V
IN
(V)
V
OUT
(V)
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 500mA
I
OUT
= 10mA
08476-014
Figure 16. Output Voltage vs. Input Voltage (in Dropout)
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
PSRR (dB)
I
OUT
= 100µA
V
IN
= V
OUT
+1V
V
RIPPLE
= 50mV
C
IN
= C
OUT
= 1µF
I
OUT
= 1mA
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 500mA
08476-015
Figure 17. Power Supply Rejection Ratio vs. Frequency, V
OUT
= 2.8 V, V
IN
= 3.8 V
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
PSRR (dB)
I
OUT
= 100µA
V
IN
= V
OUT
+1V
V
RIPPLE
= 50mV
C
IN
= C
OUT
= 1µF
I
OUT
= 1mA
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 300mA
I
OUT
= 500mA
08476-016
Figure 18. Power Supply Rejection Ratio vs. Frequency, V
OUT
= 3.3 V, V
IN
= 4.3 V