S-818 SII [Seiko Instruments Inc], S-818 Datasheet - Page 18

• Manufacturer Part Number: S-818
• Description: LOW DROPOUT CMOS VOLTAGE REGULATOR
• Manufacturer: SII [Seiko Instruments Inc]

LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
(4) Load fluctuation
18
30mA
1.0
0.8
0.6
0.4
0.2
0.0
10 A
0.3
0.2
0.1
3V
1.E-03
0
Load current dependence of load fluctuation overshoot
0
V
V
IN
VDD dependence of overshoot
IN
V
=VDD, I
fluctuation from 10 mA to 10 µA.
fluctuation while smaller current is fixed to 10 µA.
For example I
=V
OUT
I
I
OUT
OUT
OUT
2
shows
(S)+1V,CL=2 F
1.E-02
OUT
V
TIME(50 sec/div)
CL=2 F
OUT
=30mA 10 A ,CL=2 F
CL=4.7 F
4
larger load current at load current
OUT
VDD(V)
=2V
I
I
OUT
OUT
=1.E-02 (A) means load current
(A)
=10 A 30mA V
3V
3V
1.E-01
6
5V
V
5V
OUT
8
=2V
Seiko Instruments Inc.
1.E+00
IN
=4V
10
0.25
0.15
0.05
0.3
0.2
0.1
0.15
0.05
30mA
10 A
0.2
0.1
0
Output capacitor (CL) dependence of overshoot
3V
-50
0
V
Temperature dependence of overshoot
IN
1
=V
V
IN
I
5V
OUT
OUT
V
=V
OUT
V
(S)+1V ,I
OUT
OUT
=2V
(S)+1V ,I
CL=2 F
0
V
TIME(20msec/div)
OUT
3V
OUT
Ta(°C)
CL(uF)
CL=4.7 F
=2V
I
OUT
=30mA 10 A CL=2 F
OUT
10
5V
=30mA 10 A V
=30mA 10 A
3V
50
100
IN
Rev.1.2
100
=4V