LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.2.3_01
S-1312 Series
Characteristics (Typical Data)
1. Output voltage vs. Output current (When load current increases) (Ta = +25°C)
1. 1 VOUT = 1.0 V
1. 2 VOUT = 2.5 V
1.2
1.0
0.8
0.6
0.4
0.2
0
3.0
2.5
V
V
V
V
V
IN = 2.8 V
V
IN = 1.3 V
IN = 1.5 V
2.0
1.5
1.0
0.5
0
IN = 3.0 V
IN = 3.5 V
IN = 4.5 V
IN = 5.5 V
V
V
IN = 2.0 V
IN = 3.0 V
IN = 5.5 V
V
V
0
100
200
300 400
500
0
100
200
300
400
500
IOUT [mA]
IOUT [mA]
1. 3 VOUT = 3.5 V
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Remark In determining the output current, attention should
be paid to the following.
VIN = 3.8 V
VIN = 4.0 V
VIN = 4.5 V
VIN = 5.5 V
1. The minimum output current value and
footnote *5 in Table 12 in " Electrical
Characteristics"
2. The package power dissipation
0
100
200
300
400
500
IOUT [mA]
2. Output voltage vs. Input voltage (Ta = +25°C)
2. 1 VOUT = 1.0 V
2. 2 VOUT = 2.5 V
1.2
1.1
1.0
2.7
2.6
2.5
2.4
I
I
I
OUT = 1 mA
OUT = 30 mA
OUT = 50 mA
IOUT = 1 mA
IOUT = 30 mA
IOUT = 50 mA
0.9
0.8
0.7
0.6
2.3
2.2
2.1
2.0
I
OUT = 100 mA
IOUT = 100 mA
0.6
1.0
1.4
1.8
2.2
2.6
2.0
2.5
3.0 3.5
4.0
4.5
VIN [V]
VIN [V]
2. 3 VOUT = 3.5 V
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
I
I
I
OUT = 1 mA
OUT = 30 mA
OUT = 50 mA
I
OUT = 100 mA
3.0
3.5
4.0
4.5
5.0
5.5
VIN [V]
23
SII [ SEIKO INSTRUMENTS INC ]
