s-8424a Seiko Instruments Inc., s-8424a Datasheet - Page 8

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

Remark The number in the Test Circuit column corresponds to the circuit number in the “Test Circuit” section.
8
BATTERY BACKUP SWITCHING IC
S-8424A Series
3. S-8424AACxx
Sink current
Current consumption
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
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
PREEND detection voltage
PREEND release voltage
BAT
BAT
switch leakage current
switch resistance
Parameter
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Ta
Ta
Ta
Δ
Δ
Δ
Ta
Ta
Ta
Symbol
Ta
ΔV
ΔV
−V
+V
−V
+V
−V
+V
I
Δ
Δ
ΔV
ΔV
Δ
SINK
V
Δ
V
−
−
−
V
V
V
I
I
I
I
V
R
V
V
•
•
•
V
I
V
V
LEAK
LEAK
V
BAT1
BAT2
V
drop1
drop2
SS1
SW1
SW2
•
OUT
•
V
V
•
BAT
OUT1
OUT2
DET1
DET1
DET2
DET2
DET3
DET3
V
RO
•
opr
SW
−
−
−
SW
RO1
RO2
OUT
IN
SW
RO
V
DET
DET
V
DET
V
V
V
V
V
Table 6 Electrical Characteristics
OUT
1
2
SW
SW
RO
DET
DET
DET
3
1
2
2
1
2
3
1
Seiko Instruments Inc.
V
V
V
V
V
V
V
V
V
V
Ta = −40°C to +85°C
V
V
V
V
V
Ta = −40°C to +85°C
Ta = −40°C to +85°C
V
V
Ta = −40°C to +85°C
Ta = −40°C to +85°C
V
V
Ta = −40°C to +85°C
Ta = −40°C to +85°C
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
DS
BAT
BAT
IN
IN
IN
IN
OUT
BAT
DS
= 3.6 V, I
= 3.6 V, I
= 3.6 V, I
= 3.6 to 16 V, I
= 3.6 V, I
= 3.6 V, I
= 3.6 V, I
= 3.6 to 16 V, I
voltage detection
= 3.6 V, V
= Open, V
= 3.6 V, V
= Open, V
or V
= 16 V, V
= 0.5 V, V
= 2.8 V, V
= 3.0 V, V
voltage detection
voltage detection
BAT
RO
RO
RO
OUT
OUT
OUT
IN
BAT
BAT
BAT
BAT
IN
IN
OUT
= 0.1 to 20 mA
= 16 V
= 15 mA
= 15 mA
= V
= 15mA
= 15 mA
= 0.1 to 20 mA
= 0 V
= 3.0 V, Unload
voltage detection
= 3.0 V, I
= 3.0 V, Unload
RO
OUT
voltage detection
Conditions
BAT
= 15 mA
= 15 mA
= 2.0 V
⎯
⎯
⎯
⎯
⎯
OUT
= 10 to 500 μA
CS
RESET
PREEND
Ta = 25°C
Ta = 85°C
(Unless otherwise specified: Ta = 25°C)
+V
× 0.83
× 0.93
3.136
3.136
3.234
3.319
2.352
2.467
2.548
2.682
Min.
1.50
1.50
1.50
V
1.7
1.7
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
OUT
DET1
+V
× 0.85
× 0.95
3.200
3.200
3.300
3.401
2.400
2.528
2.600
2.748
±100
±100
±100
±100
±100
±100
±100
V
Typ.
2.30
2.30
2.30
0.26
181
123
1.0
50
50
⎯
⎯
⎯
30
⎯
⎯
⎯
OUT
5
5
7
DET1
+V
× 0.87
× 0.97
3.264
3.264
3.366
3.482
2.448
2.589
2.652
2.814
Max.
V
0.50
243
100
167
100
0.1
0.1
2.1
3.5
4.0
20
⎯
20
⎯
16
16
⎯
⎯
⎯
⎯
⎯
⎯
60
⎯
⎯
15
OUT
DET1
Rev.2.2
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ppm/°C
Unit
mV
mV
mV
mV
mV
mV
mA
mA
mA
μA
μA
μA
μA
μA
μA
Ω
V
V
V
V
V
V
V
V
V
V
V
V
V
Circuit
Test
_00
3
1
2
4
5
6
7
4
5
8
7