S-818A30AMC-BGK-T2 查看數據表（PDF） - Seiko Instruments Inc
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S-818A30AMC-BGK-T2 Datasheet PDF : 23 Pages
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LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Rev.1.2
(4) Load fluctuation
30mA
IOUT=10µA→30mA VIN=4V
10µA
3V
IOUT
VOUT
CL=2µF
CL=4.7µF
TIME(50µsec/div)
30mA
IOUT=30mA→10µA VIN=4V
10µA
IOUT
CL=2µF
CL=4.7µF
3V
VOUT
TIME(20msec/div)
Load current dependence of load fluctuation overshoot
∆IOUT shows larger load current at load current
fluctuation while smaller current is fixed to 10 µA.
For example ∆IOUT=1.E-02 (A) means load current
fluctuation from 10 mA to 10 µA.
Output capacitor (CL) dependence of overshoot
VIN=VOUT(S)+1V,CL=2µF
1.0
VIN=VOUT(S)+1V ,IOUT=30mA→10µA
0.2
0.8
5V
0.15
VOUT=2V
0.6
3V
3V
0.1
0.4
5V
0.2
0.05
VOUT=2V
0.0
0
1.E-03
1.E-02
1.E-01
1.E+00
1
∆IOUT(A)
10
100
CL(uF)
VDD dependence of overshoot
VIN=VDD, IOUT=30mA→10µA ,CL=2µF
0.3
3V
0.2
0.1
0
0
VOUT=2V
5V
2
4
6
8
10
VDD(V)
Temperature dependence of overshoot
VIN=VOUT(S)+1V ,IOUT=30mA→10µA,CL=2µF
0.3
0.25
0.2
3V
0.15
0.1
0.05
VOUT=2V
5V
0
-50
0
50
100
Ta(°C)
18
Seiko Instruments Inc.
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