S-8244 Series
www.sii-ic.com
© Seiko Instruments Inc., 2003-2013
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK
(SECONDARY PROTECTION)
Rev.6.2
_00
The S-8244 Series is used for secondary protection of lithium-ion batteries with from one to four cells, and incorporates a
high-precision voltage detector circuit and a delay circuit. Short-circuiting between cells makes it possible for serial
connection of one to four cells.
Features
(1) Internal high-precision voltage detector circuit
•
Overcharge detection voltage range : 3.700 V to 4.500 V : Accuracy of
±
25 mV (at
+25°C)
(at a 5 mV/step)
Accuracy of
±
50 mV (at
−40°C
to
+85°C)
•
Hysteresis :
5 types
0.38
±
0.1 V, 0.25
±
0.07 V, 0.13
±
0.04 V, 0.045
±
0.02 V, None
(2) High withstand voltage device :
Absolute maximum rating : 26 V
(3) Wide operating voltage range :
3.6 V to 24 V (refers to the range in which the delay circuit can operate
normally after overvoltage is detected)
(4) Delay time during detection :
Can be set by an external capacitor.
(5) Low current consumption :
At 3.5 V for each cell : 3.0
μA
max. (+25°C)
At 2.3 V for each cell : 2.4
μA
max. (+25°C)
(6) Output logic and form :
5 types
CMOS output active “H”
CMOS output active “L”
Pch open drain output active “L”
Nch open drain output active “H”
Nch open drain output active “L”
(CMOS / Nch open drain output for 0.045 V hysteresis models)
*1
(7) Lead-free, Sn 100%, halogen-free
*1.
Refer to “
Product Name Structure”
for details.
Applications
•
Lithium ion rechargeable battery packs (secondary protection)
Packages
•
SNT-8A
•
8-Pin MSOP
•
TMSOP-8
Seiko Instruments Inc.
1
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.6.2
_00
S-8244 Series
Block Diagram
VCC
SENSE
Overcharge detection
comparator 1
+
-
Reference voltage 1
VC1
Overcharge detection
comparator 2
+
-
Overcharge
detection
delay circuit
ICT
Control
logic
Reference voltage 2
VC2
Overcharge detection
comparator 3
+
-
Reference voltage 3
VC3
Overcharge detection
comparator 4
+
-
CO
Reference voltage 4
VSS
Remark
In the case of Nch open-drain output, only the Nch transistor will be connected to the CO pin.
In the case of Pch open-drain output, only the Pch transistor will be connected to the CO pin.
Figure 1
2
Seiko Instruments Inc.
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.6.2
_00
S-8244 Series
Product Name Structure
1.
Product Name
(1)
SNT-8A
xx
PH
-
xxx
TF
x
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction of tape specifications
*1
Product name (abbreviation)
Package abbreviation
PH: SNT-8A
Serial code
Sequentially set from AA to ZZ
*1.
*2.
(2)
Refer to the tape specifications at the end of this book.
Refer to the “3.
Product Name List”.
8-Pin MSOP
xx
FN
-
xxx
T2
x
Environmental code
S: Lead-free, halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction of tape specifications
Product name (abbreviation)
*2
Package abbreviation
FN: 8-Pin MSOP
Serial code
Sequentially set from AA to ZZ
*1.
*2.
Refer to the tape specifications at the end of this book.
Refer to the “3.
Product Name List”.
*1
*2
S-8244A
S-8244A
Seiko Instruments Inc.
3
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.6.2
_00
S-8244 Series
(3)
TMSOP-8
xx
FM
-
xxx
T2
U
Environmental code
U: Lead-free (Sn 100%), halogen-free
IC direction of tape specifications
*1
Product name (abbreviation)
*2
Package abbreviation
FM: TMSOP-8
Serial code
Sequentially set from AA to ZZ
*1.
*2.
2.
Refer to the tape specifications at the end of this book.
Refer to the “3.
Product Name List”.
S-8244A
Packages
Package name
Drawing code
Package
PH008-A-P-SD
FN008-A-P-SD
FM008-A-P-SD
Tape
PH008-A-C-SD
FN008-A-C-SD
FM008-A-C-SD
Reel
PH008-A-R-SD
FN008-A-R-SD
FM008-A-R-SD
Land
PH008-A-L-SD
⎯
⎯
SNT-8A
8-Pin MSOP
TMSOP-8
3.
Product Name List
(1) SNT-8A
Table 1
Product name
S-8244AAAPH-CEATFx
S-8244AABPH-CEBTFx
S-8244AADPH-CEDTFx
S-8244AAFPH-CEFTFx
S-8244AAGPH-CEGTFx
S-8244AAJPH-CEJTFx
S-8244AASPH-CESTFx
S-8244AATPH-CETTFU
S-8244AAVPH-CEVTFx
S-8244AAYPH-CEYTFx
S-8244AAZPH-CEZTFx
S-8244ABBPH-CFBTFx
S-8244ABDPH-CFDTFx
S-8244ABEPH-CFETFx
S-8244ABHPH-CFHTFx
S-8244ABMPH-CFMTFU
Overcharge detection voltage
[V
CU
]
4.450
±
0.025 V
4.200
±
0.025 V
4.200
±
0.025 V
4.350
±
0.025 V
4.450
±
0.025 V
4.500
±
0.025 V
4.350
±
0.025 V
4.200
±
0.025 V
4.275
±
0.025 V
4.300
±
0.025 V
4.280
±
0.025 V
4.380
±
0.025 V
4.150
±
0.025 V
4.215
±
0.025 V
4.280
±
0.025 V
4.100
±
0.025 V
Overcharge hysteresis voltage
Output form
[V
CD
]
0.38
±
0.1 V
CMOS output active “H”
0V
Nch open drain active “H”
0V
Pch open drain active “L”
0.045
±
0.02 V
0.045
±
0.02 V
0.38
±
0.1 V
0.38
±
0.1 V
0.25
±
0.07 V
0.045
±
0.02 V
0.25
±
0.07 V
0.25
±
0.07 V
0.25
±
0.07 V
0.045
±
0.02 V
0V
0.045
±
0.02 V
0.25
±
0.07 V
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “H”
CMOS output active “L”
Nch open drain active “L”
CMOS output active “H”
CMOS output active “H”
Remark 1.
Please contact our sales office for the products with the detection voltage value other than those specified above.
2.
x: G or U
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
4
Seiko Instruments Inc.
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.6.2
_00
S-8244 Series
(2) 8-Pin MSOP
Table 2
Overcharge hysteresis voltage
Overcharge detection
[V
CD
]
Product name
voltage
Output form
[V
CU
]
S-8244AAAFN-CEAT2z
4.450
±
0.025 V
0.38
±
0.1 V
CMOS output active “H”
S-8244AABFN-CEBT2z
4.200
±
0.025 V
0V
Nch open drain active “H”
S-8244AACFN-CECT2z
4.115
±
0.025 V
0.13
±
0.04 V
CMOS output active “H”
S-8244AADFN-CEDT2z
4.200
±
0.025 V
0V
Pch open drain active “L”
S-8244AAEFN-CEET2z
4.225
±
0.025 V
0V
Nch open drain active “H”
S-8244AAFFN-CEFT2z
4.350
±
0.025 V
0.045
±
0.02 V
CMOS output active “H”
S-8244AAGFN-CEGT2z
4.450
±
0.025 V
0.045
±
0.02 V
CMOS output active “H”
S-8244AAHFN-CEHT2z
4.300
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAIFN-CEIT2z
4.400
±
0.025 V
0.045
±
0.02 V
CMOS output active “H”
S-8244AAJFN-CEJT2z
4.500
±
0.025 V
0.38
±
0.1 V
CMOS output active “H”
S-8244AAKFN-CEKT2z
4.475
±
0.025 V
0.38
±
0.1 V
CMOS output active “H”
S-8244AALFN-CELT2z
4.350
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAMFN-CEMT2z
4.300
±
0.025 V
0.25
±
0.07 V
CMOS output active “L”
S-8244AANFN-CENT2z
4.150
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAOFN-CEOT2z
4.250
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAPFN-CEPT2z
4.050
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAQFN-CEQT2z
4.150
±
0.025 V
0V
Nch open drain active “H”
S-8244AARFN-CERT2z
4.300
±
0.025 V
0.25
±
0.07 V
Nch open drain active “H”
S-8244AATFN-CETT2z
4.200
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAUFN-CEUT2z
3.825
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAWFN-CEWT2z
4.500
±
0.025 V
0.38
±
0.1 V
CMOS output active “L”
S-8244AAXFN-CEXT2z
4.025
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244AAZFN-CEZT2S
4.280
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244ABAFN-CFAT2z
4.220
±
0.025 V
0.045
±
0.02 V
CMOS output active “H”
S-8244ABCFN-CFCT2z
3.750
±
0.025 V
0.25
±
0.07 V
CMOS output active “H”
S-8244ABGFN-CFGT2S
4.225
±
0.025 V
0.045
±
0.02 V
Nch open drain active “L”
S-8244ABIFN-CFIT2S
4.100
±
0.025 V
0V
Nch open drain active “L”
S-8244ABJFN-CFJT2S
4.325
±
0.025 V
0.045
±
0.02 V
Nch open drain active “L”
S-8244ABKFN-CFKT2S
4.175
±
0.025 V
0V
Nch open drain active “L”
Remark 1.
Please contact our sales office for the products with the detection voltage value other than those specified above.
2.
z: G or S
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
Seiko Instruments Inc.
5
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