7) Dropout Voltage vs. Set Output Voltage
R1111N××1B
Topt = 25
1.0
0.9
IOUT = 150mA
IOUT = 100mA
IOUT = 50mA
IOUT = 30mA
IOUT = 10mA
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.0
2.0
3.0
4.0
5.0
Set Output Voltage Vreg (V)
8) Ripple Rejection vs. Frequency
R1111N181B
R1111N181B
VIN = 2.8VDC + 0.5Vp-p
COUT = tantal 2.2µF
V
IN = 2.8VDC + 0.5Vp-p
C
OUT = tantal 1.0µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
I
OUT = 1mA
IOUT= 1mA
I
OUT = 30mA
IOUT = 30mA
IOUT = 50mA
I
OUT = 50mA
0.1
1
10
100
0.1
1
10
100
Frequuency f (kHz)
Frequuency f (kHz)
R1121N301B
R1121N301B
VIN = 4VDC + 0.5Vp-p
COUT = tantal 2.2µF
V
IN = 4VDC + 0.5Vp-p
C
OUT = tantal 1.0µF
80
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
IOUT = 1mA
I
I
I
OUT = 1mA
OUT = 30mA
OUT = 50mA
IOUT = 30mA
IOUT = 50mA
0.1
1
10
100
0.1
1
10
100
Frequuency f (kHz)
Frequuency f (kHz)
Rev.1.11
- 11 -
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
