s-8425 Seiko Instruments Inc., s-8425 Datasheet - Page 6

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

6
Remark The number in the Test Circuit column corresponds to the circuit number in the Test Circuits section.
BATTERY BACKUP SWITCHING IC
S-8425 Series
T
o
a
V
V
w
t
o
a
g
e
e
g
u
a
o
o
a
g
e
d
e
e
o
S
h
u
n
l
c
c
t
r
t
r
t
t
t
r
t
t
l
l
l
i
i
Electrical Characteristics
S-8425AAAFT, S-8425AAAPA
Current consumption
Sink current
Output voltage 1
Dropout voltage 1
Load stability 1
Input stability 1
Output voltage temperature coefficient 1
Output voltage 2
Dropout voltage 2
Load stability 2
Input stability 2
Output voltage temperature coefficient 2
Output voltage 3
Dropout voltage 3
Load stability 3
Input stability 3
Output voltage temperature coefficient 3
Primary power input voltage
CS detection voltage
CS release voltage
Operating voltage
Detection voltage temperature coefficient
Leakage current
Switch voltage
CS output inhibit voltage
V
V
Switch voltage temperature coefficient
CS output inhibit voltage temperature
coefficient
Backup power supply input voltage
RESET detection voltage
RESET release voltage
RESET release delay time
BAT
BAT
switch leakage current
switch resistance
Parameter
Δ
Δ
Δ
Ta
Δ
Δ
Ta
Δ
Δ
Δ
Δ
Ta
Ta
Ta
Symbol
Table 2 Electrical Characteristics
Ta
ΔV
ΔV
Ta
Δ
Δ
−V
+V
− V
+ V
Δ
ΔV
ΔV
ΔV
ΔV
V
V
Δ
V
V
Δ
t
−
•
I
R
I
I
−
•
V
V
V
I
I
LEAK
BAT1
BAT2
V
DELAY
I
V
V
V
V
V
SS1
LEAK
V
SINK
V
V
(
•
BAT
drop1
drop2
•
drop3
(
SW
•
V
SW1
SW2
OUT
V
•
OUT1
OUT2
•
DET1
DET1
DET2
DET2
−
SW
RO
OUT
CH
opr
−
SW
RO1
RO2
CH1
CH2
IN
RO
CH
V
V
DET
V
DET
V
V
V
V
OUT
SW
SW
DET
1
2
RO
CH
DET
1
2
2
1
Seiko Instruments Inc.
1
2
)
)
V
V
I
V
V
Ta = −40°C to +85°C
V
I
V
V
Ta = −40°C to +85°C
I
I
V
V
Ta = −40°C to +85°C
V
V
V
Ta = − 40 ° C to + 85 ° C
Ta = − 40 ° C to + 85 ° C
V
V
V
V
V
V
500 μ A
Ta = − 40 ° C to + 85 ° C
Ta = − 40 ° C to + 85 ° C
V
V
V
Unload
RO
OUT
IN
OUT
DS
IN
IN
IN
IN
IN
IN
BAT
BAT
IN
IN
IN
IN
IN
OUT
IN
IN
DS
IN
BAT
IN
= 7.2 V, I
= 3 mA
=7.2 V, I
= 4.2 to 16 V, I
= 7.2 V, I
= 4.2 to 16 V, I
= 7.2 V, I
= 4.3 to 16 V, I
= 3.6 V, V
= Open, V
= 7.2 V, I
= 7.2 V, I
voltage detection
= V
= 3.6 V, Unload
= Open, V
= 0.5 V
or V
= 16 V, V
= 23 mA
= 3 mA
= 2.8 V, V
= 3 V, V
= 3 V
voltage detection
BAT
BAT
= 2.0 V
OUT
RO
OUT
OUT
RO
OUT
OUT
IN
BAT
Conditions
BAT
BAT
= 100 μA to 20 mA
IN
= 3 mA
= 3 mA
= 16 V
= 100 μA to 60 mA
= 100 μA to 10 mA
= 23 mA
voltage detection
= 0 V
voltage detection
= 3 V, I
= 3 V
RO
OUT
OUT
−
−
−
−
−
= 3 mA
= 23 mA
= 3 mA
OUT
CS
RESET
Ta = 25 ° C
Ta = 85 ° C
= 10 to
(Ta = 25°C, Unless otherwise specified)
+ V
× 0.83
× 0.93
2.940
2.940
3.234
3.234
3.319
2.156
2.256
V
Min.
1.50
1.50
0.3
1.7
2.0
OUT
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
DET1
+ V
× 0.85
× 0.95
3.000
3.000
3.300
3.300
3.401
2.200
2.312
±100
±100
±100
± 100
± 100
± 100
± 100
V
Typ.
2.30
2.30
187
0.8
1.0
41
50
50
90
50
30
OUT
5
5
5
−
−
−
−
7
−
−
−
DET1
+ V
× 0.87
× 0.97
3.060
3.060
3.366
3.366
3.482
2.244
2.367
Max.
V
100
252
100
120
100
0.1
0.1
0.1
2.1
3.5
4.0
59
20
20
20
16
16
60
15
OUT
−
−
−
−
−
−
−
−
DET1
−
−
Rev.2.3
ppm/°C
ppm/°C
ppm/°C
ppm/ ° C
ppm/ ° C
ppm/ ° C
ppm/ ° C
Unit
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
mA
ms
μ A
μ A
μ A
μ A
μ A
μ A
Ω
V
V
V
V
V
V
V
V
V
V
V
V
Circuit
Test
_00
1
2
9
2
3
4
5
6
7
4
5
8
7