R1171 Datasheet, PDF (15/24 Pages) RICOH electronics devices division – 2.0A/1.5A LDO REGULATOR

R1171x
7) Dropout Voltage vs. Set Output Voltage (Topt=25°C)
R1171Sxx1x
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
IOUT=1500mA
IOUT=1000mA
IOUT=600mA
IOUT=200mA
2
3
4
5
Set Output Voltage VSET(V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
R1171Jxx1x
IOUT=2000mA
IOUT=1000mA
IOUT=400mA
IOUT=200mA
2
3
4
5
Set Output Voltage VSET(V)
8) Ripple Rejection vs. Frequency
R1171x151B
VIN=2.5V+0.5Vp-p
80
70
60
50
40
30
20
10
0
0.1
IOUT=1mA
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=500mA
1.0
10.0
Ripple Frequency f(kHz)
100.0
80
70
60
50
40
30
20
10
0
0.1
R1171x201B
VIN=3.0V+0.5Vp-p
IOUT=1mA
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=500mA
1.0
10.0
Ripple Frequency f(kHz)
100.0
80
70
60
50
40
30
20
10
0
0.1
R1171x301B
VIN=4.0V+0.5Vp-p
IOUT=1mA
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=500mA
1.0
10.0
Ripple Frequency f(kHz)
100.0
80
70
60
50
40
30
20
10
0
0.1
R1171x501B
VIN=5.75V+0.5Vp-p
IOUT=1mA
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=500mA
1.0
10.0
Ripple Frequency f(kHz)
100.0
15