s-8424a Seiko Instruments Inc., s-8424a Datasheet - Page 23

• Manufacturer Part Number: s-8424a
• Description: Battery Backup Switching Ic
• Manufacturer: Seiko Instruments Inc.

Rev.2.2
Power Supply Variation
VOUT pin
VRO pin
Power supply variation: 6 V and 10 V square waves
Figure 14 Power Supply Variation:
Output
voltage
Input
voltage
Output Voltage
Input Voltage
(50 mV/div)
_00
(4 V/div)
Output Voltage
Input Voltage
(50 mV/div)
6 V
(4 V/div)
6 V and 10 V Square Waves
10 V
6 V
Figure 16 Ringing Waveform of Power Supply Variation (VOUT Pin)
Figure 17 Ringing Waveform of Power Supply Variation (VRO Pin)
6 V
10 V
Overshoot
10 V
Undershoot
Seiko Instruments Inc.
t (100 μ s/div)
t (100 μ s/div)
Fast amplifier
P.G.
C
10 V
C
OUT
BATTERY BACKUP SWITCHING IC
10 V
Figure 15 Test Circuit
RO
VIN
S-8424A Series
= 22 μ F, I
6 V
= 22 μ F, I
6 V
VSS
VOUT
OUT
RO
= 30 mA, Ta = 25 ° C
= 50 mA, Ta = 25 ° C
C
OU T
S-8424A Series
R
L
Oscillo-scope
23