S-8424AAAFT-TB-X Datasheet, PDF (23/46 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

Rev.3.0_01
BATTERY BACKUP SWITCHING IC
S-8424A Series
 Transient Response
1. Line Transient Response Against Input Voltage Variation
The input voltage variation differs depending on whether the power supply input (0 V to 10 V square wave) is
applied or the power supply variation (6 V and 10 V square waves) is applied. This section describes the
ringing waveforms and parameter dependency of each type. The test circuit is shown for reference.
Power supply application: 0 V to 10 V Square wave
Input voltage
0V
10 V
Output voltage
Overshoot
Undershoot
Fast amplifier
VIN
VOUT
S-8424A
Series
VSS
P.G.
C_OUT
Oscilloscope
R_L
Figure 10 Power Supply Application:
0 V to 10 V Square Wave
Power Supply Application
VOUT pin
C_OUT = 22 μF, I_OUT = 50 mA, Ta = 25°C
10 V
Input Voltage
(5 V/div)
0V
Figure 11 Test Circuit
VRO pin
C_RO = 22 μF, I_RO = 30 mA, Ta = 25°C
10 V
Input Voltage
(5 V/div)
0V
Output Voltage
(0.5 V/div)
Output Voltage
(0.5 V/div)
t (100 μs/div)
Figure 12 Ringing Waveform of Power Supply
Application (VOUT Pin)
t (100 μs/div)
Figure 13 Ringing Waveform of Power Supply
Application (VRO Pin)
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