SUPER-SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-817 Series
Rev.3.0_00
1. 3 Power fluctuation S-817A30A / S-817B30A (when using a ceramic capacitor, CL=1 µF)
VIN 4 V 10 V,I
1 mA, C 1 F
= µ
=
→
=
OUT
L
10 V
4 V
VOUT
(0.2 V/div)
3 V
TIME(200 s/div)
µ
Load dependencies of overshoot at power fluctuation CL dependencies of overshoot at power fluctuation
VIN=VOUT(S)+1 V→ VOUT(S)+2 V, CL=1 µF
VIN=VOUT(S)+1 V→VOUT(S)+2 V, IOUT=1 mA
0.5
0.4
0.3
0.2
0.1
0
1
0.8
0.6
0.4
0.2
0
2 V
3 V
5 V
2 V
5 V
0.1
3 V
0.01
1
10
1.E-07 1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01
IOUT(A)
CL(µF)
VDD dependencies of overshoot at power fluctuation
“Ta” dependencies of overshoot at power fluctuation
VIN=VOUT(S)+1 V→VDD, IOUT=1 mA, CL=1 µF
1
VIN=VOUT(S)+1 V→VOUT(S)+2 V, IOUT=1 mA, CL=1 µF
1
0.8
0.8
5V
0.6
0.6
3V
5V
0.4
0.4
0.2
0
3V
2V
2V
0.2
0
-50
0
50
100
0
2
4
6
8
10
Ta(°C)
VDD(V)
27
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
