s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 14

• Manufacturer Part Number: s-8425
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

Power Supply Variation
14
Input
voltage
Output
voltage
BATTERY BACKUP SWITCHING IC
S-8425 Series
Power supply variation: 6 V and 10 V square waves
VOUT pin
VRO pin
Output voltage
Input voltage
Figure 15 Power Supply Variation:
(50 mV/div)
Output voltage
6 V
(50 mV/div)
(4 V/div)
Input voltage
(4 V/div)
10 V
6 V and 10 V Square Waves
Figure 17 Ringing Waveform of Power Supply Variation (VOUT Pin)
Figure 18 Ringing Waveform of Power Supply Variation (VRO Pin)
Overshoot
6V
6V
10V
10V
Unde rshoot
Seiko Instruments Inc.
t (100 μ s/div)
t (100 μ s/div)
C
C
OUT
RO
Fast amplifier
10V
10V
P.G.
= 22 μ F, I
= 22 μ F, I
6V
6V
Figure 16 Test Circuit
RO
OUT
VIN
= 30 mA, Ta = 25 ° C
S-8425 Series
= 50 mA, Ta = 25 ° C
VSS
VOUT
C
OUT
Rev.2.3
R
L
Oscillo-
scope
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