R1141Q Datasheet, PDF (11/15 Pages) RICOH electronics devices division – SC82 120mA LDO REGULATOR

7) Dropout Voltage vs. Set Output Voltage
1.0
0.9
10mA
0.8
30mA
50mA
0.7
120mA
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.0
2.0
3.0
4.0
Set Output Voltage Vreg[V]
8) Ripple Rejection vs. Frequency
R1141Q151X
VIN=2.5V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2µF
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f (kHz)
R1141Q401X
VIN=5.0V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2µF
90
R1141Q281X
VIN=3.8V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2µF
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f (kHz)
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f (kHz)
Rev. 1.10
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