S-814 Datasheet, PDF (25/32 Pages) Seiko Instruments Inc – LOW DROPOUT CMOS VOLTAGE REGULATOR

Rev.2.1_00
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-814 Series
Load current dependencies of undershoot
V_IN=V_OUT(S)+1 V, C_L=1 μF
1.4
1.2
1
0.8
3V
5V
0.6
0.4
0.2
V_OUT=2 V
0
1.E−03
1.E−02
1.E−01
1.E+00
ΔI_OUT [A]
Remark ΔI_OUT shows larger load current at load
current fluctuation. Lower current at load
current fluctuation is fixed to 10 µA.
i.e. ΔI_OUT=1.E−02 [A] means load current
fluctuation from 10 µA to 10 mA.
V_DD dependencies of undershoot
1.0 ^{VIN=VDD, IOUT=10 μA→30 mA, CL=1 μF}
0.8
3V
0.6
5V
V_OUT=2 V
0.4
0.2
0
0
2
4
6
8
10
V_DD [V]
C_L dependence of undershoot
V_IN=V_OUT(S)+1 V, I_OUT=10 μA→30 mA
1.2
1.0
5V
0.8
3V
0.6
0.4
0.2 ^{VOUT=2 V}
0
0.1
1
10
100
C_L [μF]
Temperature dependencies of undershoot
V_IN=V_OUT(S)+1 V, I_OUT=10 μA→30 mA, C_L=1 μF
1.0
0.8
5V
3V
0.6
0.4
0.2
V_OUT=2 V
0
−50
0
50
100
Ta [°C]
Seiko Instruments Inc.
25