S-817 Datasheet, PDF (29/50 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR

Rev.3.0_00
SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
1. 4 Load fluctuation S-817A30A/S-817B30A (when using a ceramic capacitor, C_L=1 µF)
IOUT=30 mA→10 µA,V IN=5 V, C_L=1 µF
30 mA
10 µA
V OUT
(0.2 V/div)
3V
TIME(20 ms/div)
Load current dependencies of overshoot at load
fluctuation
VIN=VOUT(S)+2 V, IOUT=IL→ 10 µA, CL=1 µF
2
5V
1.5
1
2V
3V
0.5
0
1.E-05
1.E-04
1.E-03 1.E-02
IOUT(A)
1.E-01
1.E+00
V_DD dependencies of overshoot at load fluctuation
VIN=VDD, IOUT=10 mA,→10 µA, CL=1 µF
0.2
5V
0.15
0.1
0.05
2V
3V
0
0
2
4
6
8
10
VDD(V)
C_L dependencies of overshoot at load fluctuation
VIN=VOUT(S)+2 V, IOUT=10 mA→10 µA
1
2V
0.8
3V
0.6
5V
0.4
0.2
0
0.01
0.1
1
10
CL(µF)
“Ta” dependencies of overshoot at load fluctuation
0.2
0.15
VIN=VOUT(S)+2 V, IOUT=10 mA→10 µA, CL=1 µF
2V
5V
0.1 _3V
0.05
0
-50
0
50
100
Ta(°C)
Seiko Instruments Inc.
29