HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-L2980 Series
Rev.4.1_00
1-2. Load Fluctuation
Overshoot
Undershoot
VIN, VON/OFF=4.0 V, IOUT=1.0 mA→50 mA
VIN, VON/OFF=4.0 V, IOUT=50 mA→1.0 mA
IOUT
3.10
3.05
3.0
50
50
3.10
3.05
3.0
IOUT
1.0
1.0
VOUT
VOUT
CL=2.2 μF
CL=2.2 μF
TIME (20 μs / div.)
TIME (20 μs / div.)
1-3. ON/OFF Switching (S-L2980A50MC, Typical data, Ta=25°C)
Overshoot
Undershoot
VIN=6.0 V, RL=5.0 kΩ, CL=2.2 μF
VIN=6.0 V, RL=5.0 kΩ, CL=2.2 μF
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
VON/OFF
VON/OFF
VOUT
VOUT
TIME (20 μs / div.)
TIME (20 μs / div.)
19
Seiko Instruments Inc.