S-8426AAA-J8T1X Datasheet, PDF (22/37 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

BATTERY BACKUP SWITCHING IC
S-8426A Series
Rev.2.0_02
2. 2 Reference data: Dependency of input voltage (VIN), load capacitance (COUT), output variation width
(ΔIOUT), and temperature (Ta)
(1) VIN Dependency
(a) VOUT pin
C_OUT = 22 μF, I_OUT = 50 mA ↔ 10 μA, Ta = 25 °C
0.12
(b) VRO pin
C_RO = 22 μF, I_RO = 30 mA ↔ 10 μA, Ta = 25 °C
0.12
0.10
0.10
0.08
0.08
0.06
0.06
0.04
0.04
0.02
0.02
0.00
4 5 6 78
V_IN (V)
Figure 41
9 10
0.00
4
5 6 7 8 9 10
V_IN (V)
Figure 42
Overshoot
Undershoot
(2) COUT Dependency
(a) VOUT pin
V_IN = 6.0 V, I_OUT = 50 mA ↔ 10 μA, Ta = 25 °C
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0
10 20 30 40 50
C_OUT (μF)
Figure 43
(b) VRO pin
V_IN = 6.0 V, I_RO = 30 mA ↔ 10 μA, Ta = 25 °C
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0
10 20 30 40 50
C_RO (μF)
Figure 44
Overshoot
Undershoot
22