R1131D081A Datasheet, PDF (13/30 Pages) RICOH electronics devices division – Low Voltage 300mA LDO REGULATOR

R1131x26xx (IOUT=50mA)
80
70
60
50
40
30
20
10
0
2.6
f = 400Hz
f = 1kHz
f = 10kHz
f = 100kHz
2.7 2.8 2.9 3.0 3.1 3.2
Input Voltage VIN(V)
9) Ripple Rejection vs. Frequency (CIN=none)
R1131x08xx
VIN=1.8VDC+0.2Vp-p,
COUT=Tantalum 1.0µF
100
90
80
70
60
50
40
IOUT = 1mA
30
IOUT = 30mA
20
10
IOUT = 50mA
0
0.1
1
10
100
Frequency f(kHz)
100
90
80
70
60
50
40
30
20
10
0
0.1
R1131x10xx
VIN=2.0VDC+0.2Vp-p,
COUT=Ceramic 1.0µF
IOUT = 1mA
IOUT = 30mA
IOUT = 50mA
1
10
100
Frequency f(kHz)
R1131x
100
90
80
70
60
50
40
30
20
10
0
0.1
100
90
80
70
60
50
40
30
20
10
0
0.1
R1131x08xx
VIN=1.8VDC+0.2Vp-p,
COUT=Tantalum 2.2µF
IOUT = 1mA
IOUT = 30mA
IOUT = 50mA
1
10
100
Frequency f(kHz)
R1131x10xx
VIN=2.0VDC+0.2Vp-p,
COUT=Ceramic 2.2µF
IOUT = 1mA
IOUT = 30mA
IOUT = 50mA
1
10
100
Frequency f(kHz)
13