s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 27

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

Rev.2.3
Precautions
Application Circuits
• Add a 10 μ F or more capacitor to the VOUT, VRO, and VCH pins.
•
• In applications in which any one of I
• Attach the proper capacitor to the VOUT pin to prevent the RESET voltage detector (which monitors the
• Watch for overshoot and ensure it does not exceed the ratings of the IC chips and/or capacitors
• SII claims no responsibility for any and all disputes arising out of or in connection with any infringement
When Using Secondary Battery as Backup Battery
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
rise, causing the load stability to exceed standard levels. Set I
VOUT pin) from becoming active due to undershoot.
attached to the VRO, VOUT, and VCH pins.
by products including this IC of patents owned by a third party.
_00
Remark
Caution
6 V
+
The above connection diagram and constant will not guarantee successful
operation. Perform thorough evaluation using the actual application to set the
constant.
The backup battery can be floating-recharged by using voltage regulator 3.
10 μ F
3 V
0.1 μ F
VBAT
VIN
S-8425
Series
VCH
RO
VSS
Figure 26 Application Circuit
Seiko Instruments Inc.
, I
RESET
OUT
VOUT
VRO
CS
, or I
+
CH
10 μ F
100 k Ω
is small, the output voltages V
BATTERY BACKUP SWITCHING IC
100 k Ω
RO
, I
OUT
+
10 μ F
, or I
CH
VCC
INT
RESET
to 10 μ A or more.
Microcontroller
+
10 μ F
RO
,
V
OUT
S-8425 Series
, and V
CH
may
27