S-818_1 Datasheet, PDF (21/32 Pages) Seiko Instruments Inc – LOW DROPOUT CMOS VOLTAGE REGULATOR

Rev.2.1_00
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
2. Shutdown control
V_IN=10V ON/OFF=0_→10V I_OUT=30mA
10V
0V
CL=4.7_µF
ONV/_IO_NFF
CL=2_µF
V_OUT
0V
TIME(50usec/div)
Load dependencies of overshoot
VIN=VOUT(S)+1 V, CL=2 µF, ON/OFF=0 V→VOUT(S)+1 V
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 [A]
V_DD dependencies of overshoot
VIN=VDD, IOUT=30 mA, CL=2 µF, ON/OFF=0 V→VDD
1.0
0.8
5V
0.6
0.4
3V
0.2
0.0
0
VOUT=2 V
2
4
6
VDD [V]
8
10
C_L dependence of overshoot
VIN=VOUT(S)+1 V, CL=2 µF, ON/OFF=0 V→VOUT(S)+1 V
1.0
0.8
VOUT=2 V
0.6
3V
5V
0.4
0.2
0.0
1
10
100
CL [µF]
Temperature dependence of overshoot
VIN=VOUT(S)+1 V, IOUT=30 mA, CL=2 µF, ON/OFF=0 V→VOUT(S)+1 V
1.0
3V
5V
0.8
VOUT=2 V
0.6
0.4
0.2
0.0
−50
0
50
100
Ta [°C]
Seiko Instruments Inc.
21