S-8425AAAFT-TB-X Datasheet, PDF (8/45 Pages) Seiko Instruments Inc – BATTERY BACKUP SWITCHING IC

BATTERY BACKUP SWITCHING IC
S-8425 Series
Rev.3.1_01
S-8425AAGFT
Item
Output voltage 1
Dropout voltage 1
Load stability 1
Table 3
Symbol
VRO
Vdrop1
ΔVRO1
Electrical Characteristics
(Ta = 25°C, Unless otherwise specified)
Condition
Min.
Typ.
Max.
Unit
Test
Circuit
VIN = 7.2 V, IRO = 3 mA
2.940
3.000 3.060
V
IRO = 3 mA
−
41
59
mV
VIN =7.2 V, IRO = 100 μA to 20 mA
−
50
100
mV
Input stability 1
V
o Output voltage temperature coefficient 1
l
t ^{Output voltage 2}
a _{Dropout voltage 2}
g
e ^{Load stability 2}
ΔVRO2
ΔVRO
ΔTa • VRO
VOUT
Vdrop2
ΔVOUT1
VIN = 4 V to 16 V, IRO = 3 mA
Ta = −40°C to +85°C
VIN = 7.2 V, IOUT = 23 mA
IOUT = 23 mA
VIN = 7.2 V, IOUT = 100 μA to 60 mA
−
−
2.744
−
−
5
±100
2.800
187
50
20
mV
−
ppm/°C
2.856
V
252
mV
100
mV
r ^{Input stability 2}
e
g Output voltage temperature coefficient 2
u
l ^{Output voltage 3}
a
t
Dropout voltage 3
o _{Load stability 3}
r
Input stability 3
ΔVOUT2
ΔVOUT
ΔTa • VOUT
VCH
Vdrop3
ΔVCH1
ΔVCH2
VIN = 3.8 V to 16 V, IOUT = 23 mA
Ta = −40°C to +85°C
VIN = 7.2 V, ICH = 3 mA
ICH = 3 mA
VIN = 7.2 V, ICH = 100 μA to 10 mA
VIN = 3.8 V to 16 V, ICH = 3 mA
−
5
20
mV
1
−
±100
−
ppm/°C
2.744
2.800 2.856
V
−
90
120
mV
−
50
100
mV
−
5
20
mV
Output voltage temperature coefficient 3
ΔVCH
ΔTa • VCH
Ta = −40°C to +85°C
−
±100
−
ppm/°C
Primary power input voltage
V _{CS detection voltage}
o
l
CS release voltage
t ^{RESET detection voltage}
a
g
RESET release voltage
e ^{RESET release delay time}
VIN
−VDET1
+VDET1
−VDET2
+VDET2
tDELAY
−
VIN voltage detection
−
VOUT voltage detection
−
−
−
−
16
V
4.214
4.300 4.386
V
4.335
4.441 4.548
V
1.764
1.800 1.836
V
2
1.835
1.880 1.925
V
0.3
0.8
−
ms
9
Operating voltage
d
e
t _{Detection voltage temperature coefficient}
e
c
t
o Sink current
r
Vopr
Δ − VDET1
ΔTa • (−VDET1)
Δ − VDET2
ΔTa • (−VDET2)
ISINK
VIN or VBAT
Ta = −40°C to +85°C
Ta = −40°C to +85°C
VDS = 0.5 V
VIN = VBAT = 2.0 V
RESET
CS
1.7
−
16
V
−
±100
−
ppm/°C
2
−
±100
−
ppm/°C
1.50
2.30
−
mA
1.50
2.30
−
mA
3
Leakage current
ILEAK
VDS = 16 V, VIN = 16 V
−
−
0.1
μA
S Switch voltage
w
i
t
CS output inhibit voltage
c
h
VBAT switch leakage current
u ^{VBAT switch resistance}
n
i ^{Switch voltage temperature coefficient}
t
CS output inhibit voltage temperature
coefficient
VSW1
VBAT = 2.8 V, VIN voltage detection
VSW2
ILEAK
RSW
ΔVSW1
ΔTa • VSW1
ΔVSW 2
ΔTa • VSW2
VBAT = 3 V, VOUT voltage detection
VIN = 3.6 V, VBAT = 0 V
VIN = Open, VBAT = 3 V,
IOUT = 10 μA to 500 μA
Ta = −40°C to +85°C
Ta = −40°C to +85°C
+VDET1
+VDET1
+VDET1
V
4
× 0.83 × 0.85 × 0.87
VOUT
VOUT
VOUT
V
5
× 0.93 × 0.95 × 0.97
−
−
0.1
μA
6
−
30
60
Ω
7
−
±100
−
ppm/°C 4
−
±100
−
ppm/°C 5
T
o
t ^{Current consumption}
a
l
Backup power supply input voltage
ISS1
IBAT1
IBAT2
VBAT
VIN = 3.6 V, Unload
−
VBAT = 3 V
−
VIN = Open, VBAT = 3 V Ta = 25°C
−
Unload
Ta = 85°C
−
−
2.0
7
15
μA
−
0.1
μA
8
1.0
2.1
μA
−
3.5
μA
−
4.0
V
7
Remark The number in the Test Circuit column corresponds to the circuit number in the Test Circuits section.
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