S-1711 Datasheet, PDF (32/44 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION

SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1711 Series
Rev.3.1_01
3. ON / OFF Pin Transient Response Characteristics (Ta = 25°C)
VOUT = 1.5 V
VIN = 2.5 V, CLn = 1.0 μF, CIN = 1.0 μF, IOUT = 100 mA
3.5
3
3.0
VON/OFF
2
2.5
1
2.0
0
1.5
-1
1.0
-2
0.5
0
VOUT
-3
-4
-0.5
-5
-50
0
50 100 150 200
t [μs]
VOUT = 5.0 V
VIN = 6.0 V, CLn = 1.0 μF, CIN = 1.0 μF, IOUT = 100 mA
17.5
8
15.0
6
12.5
VON/OFF
4
10.0
2
7.5
0
5.0
-2
2.5
VOUT
-4
0
-6
-2.5
-8
-50
0
50 100 150 200
t [μs]
VOUT = 3.0 V
VIN = 4.0 V, CLn = 1.0 μF, CIN = 1.0 μF, IOUT = 100 mA
7
6
6
4
5
VON/OFF
2
4
0
3
-2
2
-4
1
VOUT
-6
0
-8
-1
-10
-50
0
50 100 150 200
t [μs]
4. Output Capacitance vs. Discharge Time Characteristics (Ta = 25°C)
S-1711 Series A / B type (with discharge shunt function)
VIN = VOUT + 1.0 V, IOUT = no load,
VON/OFF = VOUT + 1.0 V → VSS, tf = 1 μs
3.5
3.0
2.5
2.0
1.5
VOUT(S) = 5.0 V
1.0
VOUT(S) = 3.0 V
0.5
VOUT(S) = 1.5 V
0
0 2 4 6 8 10 12
CLn [μF]
V_ON/OFF
V_OUT
1 μs
t_DSC
V_SS
V_OUT × 10%
V_IN = V_OUT + 1.0 V
VON/OFF = VOUT + 1.0 V → VSS
Figure 27
Figure 28 Measurement Condition of Discharge Time
Remark CLn: Output capacitor set to the VOUTn pin externally (n = 1, 2)
32