LITHIUM ION BATTERY PROTECTION IC (FOR 1-CELL)
The 8231 is a series of lithium-ion rechargeable battery pro-
tection ICs incorporating high-accuracy voltage detection
circuits and delay circuits.
It is suitable for a single-cell lithium-ion battery pack.
S-8231A/B Series
FEATURES
• Internal high-accuracy voltage detection circuit
• Over charge detection voltage
•
4.00 V
±
25 mV to 4.60 V
±
25 mV
5 mV- step
Over charge release voltage
3.70 V
±
50 mV to 4.60 V
±
50m V
5 mV- step
(The over charge release voltage can be selected within the range where
the difference from over charge detection voltage is 0 to 0.3 V)
Over discharge detection voltage 1.70 V
±
80 mV to 2.50 V
±
80 mV
50 mV- step
1.70 V
±
100 mV to 3.50 V
±
100 mV
Over discharge release voltage
50 mV - step
(The over discharge release voltage can be selected within the range
where a difference from over discharge detection voltage is 0 to 1.0V)
Over current detection voltage 1
0.06 V
±
20 mV to 0.30 V
±
20 mV
5 mV-step
PIN CONFIGURATIONS
8-pin MSOP
Top view
•
•
SENS
DO
CO
VM
1
2
3
4
8
7
6
5
V
CC
NC
ICT
V
SS
•
SELECTION GUIDE
Over charge
detection delay
(C=0.047µF)(Sec)
Over discharge
detection
voltage (V)
Over discharge
release
voltage (V)
Over current
detection
voltage
Over charge
detection
voltage (V)
Over charge
release
voltage (V)
Final over
charge
magnification
0V battery
charging
function
Model/Item
• High input-voltage device (absolute maximum rating: 18 V)
• Wide operating voltage range:
1.5 V to 16 V
• The delay time for every detection can be set via an external
capacitor.
Each delay time for Over charge detection, Over discharge detec-
tion, Over current detection are “ Proportion of hundred to ten to
One. “ or “ Proportion of fifty to ten to One. “
• Two over current detection levels (protection for short-circuiting)
• Internal auxiliary over voltage detection circuit (Fail safe for over
voltage)
• Internal charge circuit for 0V battery (Unavailable is option)
• Low current consumption
Operation
Power-down mode
7.5
µA
typ. 13.7
µA
max. (-40 to +85
°C)
0.2 nA typ. 0.14
µA
max. (-40 to +85
°C)
A Series
S-8231AAFN-CAA-T2
±25mV ±50mV ±80mV ±100mV ±20mV
accuracy accuracy accuracy accuracy accuracy
4.25
4.05
4.10
4.05
4.05
3.95
4.05
4.28
4.05 *2
4.05
4.05
4.20
4.05
4.10
2.30
2.30
2.30
2.30
2.30
2.30
2.30
2.30
2.30
2.30
2.50
2.30
2.30
2.70
3.00
2.50
2.50
3.00
2.70
2.80
2.70
2.50
2.50
3.00
2.70
3.00
3.00
2.50
2.50
2.50
3.00
2.70
2.70
2.90
3.00
2.80
0.100
0.100
0.120
0.240
0.100
0.150
0.100
0.150
0.120
0.240
0.150
0.130
0.100
0.300
0.200
0.100
0.200
0.250
0.130
0.130
0.080
0.300
0.100
1.0
1.0
0.5
0.5
1.0
1.0
1.0
1.0
0.5
0.5
1.0
1.0
0.5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Available 1.24
Available 1.24
Unavailable
Unavailable
1.24
1.24
• MSOP package (8-pin) 4.0 mm x 2.95 mm
S-8231ABFN-CAB-T2 4.35
S-8231ACFN-CAC-T2 4.25
S-8231ADFN-CAD-T2 4.25
S-8231AEFN-CAE-T2
4.25
Available 1.24
Available 1.24
Available 1.24
Available 1.24
Available 1.24
Available 1.24
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
Unavailable
1.10
1.24
1.24
1.10
1.24
1.24
1.10
S-8231AGFN-CAG-T2 4.25
S-8231AHFN-CAH-T2 4.35
S-8231AIFN-CAI-T2
S-8231AJFN-CAJ-T2
S-8231AKFN-CAK-T2
S-8231ALFN-CAL-T2
4.25
4.25
4.25
4.295
S-8231AMFN-CAM-T2 4.25
S-8231ANFN-CAN-T2 4.35
S-8231AOFN-CAO-T2 4.295
S-8231AQFN-CAQ-T2 4.20
S-8231ARFN-CAR-T2 4.20
S-8231ASFN-CAS-T2
S-8231ATFN-CAT-T2
4.12
4.35
4.295 *1 2.30
4.10
4.10
4.12 *1
4.10
4.05
4.05
4.18
2.30
2.30
2.30
2.30
2.30
2.30
2.30
Available 1.24
Available 1.24
Unavailable
Unavailable
1.24
1.24
S-8231AUFN-CAU-T2 4.28
S-8231AVFN-CAV-T2
4.28
S-8231AWFN-CAW-T2 4.28
S-8231AXFN-CAX-T2
S-8231AYFN-CAY-T2
B Series
4.295
4.35
4.295 *1 2.30
4.28
2.30
Unavailable Unavailable
Available Unavailable
Accuracy
±50mV ±80mV ±100mV ±20mV
differs
accuracy accuracy accuracy accuracy
depending
on products.
*1) Without over charge detection / release hysteresis.
*2) Both charging and discharging will be unable when over charge
detected. (Over charge lock type)
*3) In the range between 0˚C and 50˚C, an accuracy of detection volt-
age is assured as
±30mV.
S-8231BAFN-CCA-T2 4.18 *3
S-8231BBFN-CCB-T2 4.18 *3
3.98
4.08
2.60
2.30
2.90
2.90
0.110
0.110
1.0
1.0
Available 1.24
Availabl
1.24
Change in the detection voltage is available in products other than the above listed ones. Contact the SII Semiconductor Products Sales Department.
V
Please design all applications of S-8231A/B Series with safety in mind.
21
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