S-L2980_1 Datasheet, PDF (19/23 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

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