S-818_1 Datasheet, PDF (20/32 Pages) Seiko Instruments Inc – LOW DROPOUT CMOS VOLTAGE REGULATOR

LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Rev.2.1_00
„ Transient Response Characteristics (S-818A30A, Typical data, Ta=25°C)
Input voltage
or
Load current
O vershoot
O utput voltage
1. Power on
10V
0V
V_IN
V_OUT
V_IN=0_→10V I_OUT=30mA
CL=4.7_µF
CL=2_µF
U n d e rs h o o t
0V
TIME(50usec/div)
Load dependence of overshoot
VIN=0 V→VOUT(S)+1 V, CL=2 µF
1.0
0.8
5V
0.6
3V
0.4
0.2
VOUT=2 V
0.0
1.E−05 1.E−04 1.E−03 1.E−02 1.E−01 1.E+00
IOUT [V]
V_DD dependence of overshoot
VIN=0 V→VDD, IOUT=30 mA, CL=2 µF
1.0
5V
0.8
3V
0.6
0.4
VOUT=2 V
0.2
0.0
0
2
4
6
8
10
VDD [V]
C_L dependence of overshoot
VIN=0 V→VOUT(S)+1 V, IOUT =30 mA
1.0
0.8
VOUT=2 V
3V
0.6
5V
0.4
0.2
0.0
1
10
100
CL [µF]
Temperature dependence of overshoot
VIN=0 V→VOUT(S)+1 V, IOUT=30 mA, CL=2 µF
1.0
0.8
3V
5V
VOUT=2 V
0.6
0.4
0.2
0.0
−50
0
50
100
Ta [°C]
20
Seiko Instruments Inc.