R1172 Datasheet, PDF (15/25 Pages) RICOH electronics devices division – SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO

90
80
70
60
50
40
30
20
10
0
3.0
R1172x301x
VIN=4.0VDC+0.2Vp-p,IOUT=10mA
200Hz
1kHz
10kHz
100kHz
3.1 3.2 3.3 3.4 3.5
Input Voltage VIN(V)
90
80
70
60
50
40
30
20
10
0
3.0
R1172x301x
VIN=4.0VDC+0.2Vp-p,IOUT=100mA
200Hz
1kHz
10kHz
100kHz
3.1 3.2 3.3 3.4 3.5
Input Voltage VIN(V)
10) Ripple Rejection vs. Frequency
80
70
60
50
40
30
20
10
0
0.1
R1172x081x
VIN=1.8VDC+0.5Vp-p,
COUT=Tantalum 4.7μF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
R1172x
90
80
70
60
50
40
30
20
10
0
3.0
R1172x301x
VIN=4.0VDC+0.5Vp-p,IOUT=10mA
200Hz
1kHz
10kHz
100kHz
3.1 3.2 3.3 3.4 3.5
Input Voltage VIN(V)
90
80
70
60
50
40
30
20
10
0
3.0
R1172x301x
VIN=4.0VDC+0.5Vp-p,IOUT=100mA
200Hz
1kHz
10kHz
100kHz
3.1 3.2 3.3 3.4 3.5
Input Voltage VIN(V)
90
80
70
60
50
40
30
20
10
0
0.1
R1172x101x
VIN=2.0VDC+0.5Vp-p,
COUT=Ceramic 4.7μF
IOUT=1mA
IOUT=30mA
IOUT=100mA
1
10
100
Frequency f(kHz)
15