Rev.1.2
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Load dependence of undershoot
0.3 VIN=VOUT(S)+2V→VOUT(S)+1V,CL=2µF
5V
0.2
VOUT=2V
0.1
3V
0
1.E-05
1.E-04
1.E-03 1.E-02
IOUT(A)
1.E-01
1.E+00
VDD dependence of undershoot
VIN=VDD→VOUT(S)+1V, IOUT=30mA,CL=2µF
0.2
5V
0.15
3V
0.1
VOUT=2V
0.05
0
0
2
4
6
8
10
VDD(V)
Output capacitor (CL) dependence of undershoot
VIN=VOUT(S)+2V→VOUT(S)+1V ,IOUT=30mA
0.05
0.04
3V
0.03
0.02
VOUT=2V
0.01
5V
0
1
10
100
CL(uF)
Temperature dependence of undershoot
VIN=VOUT(S)+2V→VOUT(S)+1V, IOUT=30mA,CL=2µF
0.06
0.05
0.04
3V
VOUT=2V
0.03
0.02
5V
0.01
0
-50
0
50
100
Ta(°C)
Seiko Instruments Inc.
17