S-8426AAA-J8T1X Datasheet, PDF (23/37 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

Rev.2.0_02
BATTERY BACKUP SWITCHING IC
S-8426A Series
(3) ΔIOUT Dependency
ΔI_OUT and ΔI_RO show the fluctuation between the low current stabilized at 10 μA and the high current. For
example, ΔI_OUT = 10 mA means a fluctuation between 10 μA and 10 mA.
(a) VOUT pin
C_OUT = 22 μF, V_IN = 6.0 V, Ta = 25 °C
0.12
(b) VRO pin
C_RO = 22 μF, V_IN = 6.0 V, 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
0 10 20 30 40 50 60
ΔI_OUT (mA)
Figure 45
0.00
0
10 20 30 40 50 60
ΔI_RO (mA)
Figure 46
Overshoot
Undershoot
(4) Temperature Dependency
(a) VOUT pin
V_IN = 6.0 V, I_OUT = 50 mA ↔ 10 μA, C_OUT = 22 μF
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
−50
0
50
100
Ta (°C)
Figure 47
(b) VRO pin
V_IN = 6.0 V, I_RO = 30 mA ↔ 10 μA, C_RO = 22 μF
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
−50
0
50
100
Ta (°C)
Figure 48
Overshoot
Undershoot
Caution 1. Be sure to add a 10 μF or more capacitor to the VOUT and VRO pins.
2. The above connections and values will not guarantee correct operation. Before setting these
values, perform sufficient evaluation on the application to be actually used.
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