AME8831_08 Datasheet, PDF (9/15 Pages) Analog Microelectronics – 150mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application

AME
AME8831
150mA Hi-PSRR, Low-Quiescent LDO
with In-Rush Current Control
For USB Application
Output Voltage vs Load Current
3.26
3.25
V _IN=4.3V
T_J=25
3.24
3.23
3.22
3.21
3.2
3.19
0
15 30 45 60 75 90 105 120 135 150
Load Current (mA)
Output Noise Spectral Density
10
V_IN=4.3V
C_OUT=4.7µ F
C_(SR)=0.47µF
I_O =150mA
1
I_O=1mA
0.1
100
1000
10000
Frequency (Hz)
100000
Quiescent Current vs Temperature
30
25
20
I_O=150mA
15
I_O=1mA
10
5
0
-40
-20
-5
25
55
85
125
Temperature (^oC)
Output Impedance vs Frequency
2.0
1.8
V_IN=4.3V
C_O=4.7 µF
1.6
1.4
1.2
1.0
I_O =50mA
0.8
0.6
0.4
0.2
0
100
I_O=150mA
1000
10000
100000
Frequency (Hz)
1000000
Dropout Voltage vs. Temperature
300
V_IN=4.3V
250
200
I_O=150mA
150
100
50
0
-40
-20
25
85
125
Temperature (^oC)
Rev.H.05
Ripple Rejection vs Frequency
120
100
I_O=1mA
80
V =4.3V
IN
V _OUT=3.3V
C_OUT =10µF
C_{( S R )}=0.47µ F
60
40
I _O=150mA
20
0
100
1000
10000
100000
1000000
Frequency (Hz)
9