s-8426a Seiko Instruments Inc., s-8426a Datasheet - Page 18

• Manufacturer Part Number: s-8426a
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

18
BATTERY BACKUP SWITCHING IC
S-8426A Series
Input
voltage
Output
voltage
Figure 25 Power Supply Variation:
1. 2 Power supply variation: 6 V and 10 V square waves
VOUT pin
VRO pin
6 V
Output Voltage
Output Voltage
Input Voltage
Input Voltage
6 V and 10 V Square Waves
10 V
(50 mV/div)
(50 mV/div)
(4 V/div)
(4 V/div)
Overshoot
6 V
6 V
Figure 27 Ringing Waveform of Power Supply Variation (VOUT Pin)
Figure 28 Ringing Waveform of Power Supply Variation (VRO Pin)
10 V
10 V
t (100 µs/div)
t (100 µs/div)
Undershoot
Seiko Instruments Inc.
P.G.
Fast amplifier
Figure 26 Test Circuit
VIN
C
C
OUT
RO
S-8426A
= 22 µF, I
= 22 µF, I
Seriers
VSS
10 V
10 V
VOUT
6 V
OUT
RO
6 V
t (100 µs/div)
t (100 µs/div)
= 30 mA, Ta = 25 °C
C
= 50 mA, Ta = 25 °C
OUT
R
Rev.1.0
L
Oscillo
scope
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