S-8244AAGFN-CEGT2G Seiko Instruments, S-8244AAGFN-CEGT2G Datasheet

IC LI-ION BATT PROTECT 8-MSOP

S-8244AAGFN-CEGT2G

Manufacturer Part Number
S-8244AAGFN-CEGT2G
Description
IC LI-ION BATT PROTECT 8-MSOP
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-8244AAGFN-CEGT2G

Function
Over/Under Voltage Protection
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
3.6 V ~ 24 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Product
Li-Ion Protection
Output Voltage
4.45 V
Operating Supply Voltage
3.6 V to 24 V
Supply Current
3 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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© Seiko Instruments Inc., 2003-2010
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-circuits between cells accommodate series connection of
one to four cells.
www.sii-ic.com
Features
Applications
Packages
(1) Internal high-precision voltage detector circuit
(2) High withstand voltage device :
(3) Wide operating voltage range :
(4) Delay time during detection :
(5) Low current consumption :
(6) Output logic and form :
(7) Lead-free, Sn 100%, halogen-free
• Lithium ion rechargeable battery packs (secondary protection)
• SNT-8A
• 8-Pin MSOP
• TMSOP-8
*1. Refer to “ Product Name Structure” for details.
• Overcharge detection voltage range : 3.700 V to 4.500 V : Accuracy of ± 25 mV (at +25°C)
• Hysteresis :
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK
*1
(at a 5 mV/step)
5 types
0.38 ± 0.1 V, 0.25 ± 0.07 V, 0.13 ± 0.04 V, 0.045 ± 0.02 V, None
Absolute maximum rating : 26 V
3.6 V to 24 V (refers to the range in which the delay circuit can operate
normally after overvoltage is detected)
Can be set by an external capacitor.
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)
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)
Seiko Instruments Inc.
Accuracy of ± 50 mV (at −40°C to +85°C)
(SECONDARY PROTECTION)
S-8244 Series
Rev.6.0
_00
1

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S-8244AAGFN-CEGT2G Summary of contents

Page 1

... Seiko Instruments Inc., 2003-2010 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-circuits between cells accommodate series connection of one to four cells. Features (1) Internal high-precision voltage detector circuit • ...

Page 2

... S-8244 Series Block Diagram VCC SENSE VC1 VC2 VC3 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. 2 Overcharge detection comparator Reference voltage 1 ...

Page 3

... PH *1. Refer to the tape specifications at the end of this book. *2. Refer to the “3. Product Name List”. (2) 8-Pin MSOP S-8244A xx FN *1. Refer to the tape specifications at the end of this book. *2. Refer to the “3. Product Name List”. - xxx TF x Environmental code U: Lead-free (Sn 100%), halogen-free ...

Page 4

... S-8244AAJPH-CEJTFx S-8244AASPH-CESTFx S-8244AAVPH-CEVTFx S-8244AAYPH-CEYTFx S-8244AAZPH-CEZTFx S-8244ABBPH-CFBTFx S-8244ABDPH-CFDTFx S-8244ABEPH-CFETFx S-8244ABHPH-CFHTFx Remark 1. Please contact our sales office for the products with the detection voltage value other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products xxx T2 U Environmental code ...

Page 5

... S-8244AAXFN-CEXT2z S-8244ABAFN-CFAT2z S-8244ABGFN-CFGT2S S-8244ABIFN-CFIT2S S-8244ABJFN-CFJT2S S-8244ABKFN-CFKT2S Remark 1. Please contact our sales office for the products with the detection voltage value other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. (3) TMSOP-8 Overcharge detection voltage Product name/Item S-8244AAAFM-CEAT2U ...

Page 6

... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Pin Configurations SNT-8A Top view ICT VSS 6 VC3 4 5 Figure 2 8-Pin MSOP Top view VCC 8 1 SENSE VC1 VC2 4 5 Figure 3 TMSOP-8 Top view 1 8 VCC 2 7 SENSE VC1 3 6 VC2 ...

Page 7

... Board size : (2) Name : JEDEC STANDARD51-7 Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Figure 5 Power Dissipation of Package (When Mounted on Board) Table 7 Symbol ...

Page 8

... CO “L” voltage *1. ± when Ta = − 40 ° ° C. *2. 0.25 ± 0.07 V, 0.13 ± 0.04 V, 0.045 ± 0.02 V except for 0.38 V hysteresis models. *3. Overcharge detection voltage or overcharge hysteresis voltage. *4. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by design, not tested in production ...

Page 9

... Product with CMOS output active “H”, Nch open drain output active “H” The overcharge detection voltage gradually, after setting 3.5 V. After that, gradually decreasing V2’s voltage to set CO = “L”, and the difference of this V2’s voltage and V • Product with CMOS output active “L”, Nch open drain output active “L”, Pch open drain output active “L” ...

Page 10

... Product with CMOS output active “L”, Nch open drain output active “L”, Pch open drain output active “L” Rise V1 to 4.7 V momentarily within 10 μ s after setting 3.5 V. The period from V1 having reached 4 “L” is the overcharge detection delay time (t (6) Test Condition 6, Test Circuit 3 Measure current consumption (I1) setting ...

Page 11

... CC μ the V voltage. CO(H) • Product with Nch open drain output active “H” Increase V6 from 0 V gradually after setting 3.5 V, the V6’s voltage when flowing μ the V voltage. CO(L) • Product with Nch open drain output active “L” Increase V6 from 0 V gradually after setting 4.6 V, the V6’s voltage when flowing μ the V voltage ...

Page 12

... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series 10 MΩ S-8244 VCC CO SENSE ICT V1 VC1 VSS V2 VC2 VC3 V3 Test Circuit 1 S-8244 VCC SENSE VC1 V2 I3 VC2 V3 Test Circuit 3 12 SW1 SW2 MΩ ICT VSS VC3 V2 V3 Figure 6 Seiko Instruments Inc. ...

Page 13

... This will cause a deviation between the calculated delay time and the resultant delay time. Also, delay time is internally set in this IC to prevent the CO output from inverting until the charge to delay capacitor pin is reached to the specified voltage. ...

Page 14

... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Timing Chart V CU Battery voltage CMOS output active “H” and CO pin voltage Nch open drain output active “H” products CMOS output active “L” pin voltage Pch open drain output active “L” and Nch open drain output active “ ...

Page 15

... ICT Caution1. The above constants may be changed without notice has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant ...

Page 16

... ICT Caution1. The above constants may be changed without notice has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant ...

Page 17

... ICT Caution1. The above constants may be changed without notice has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant ...

Page 18

... ICT Caution1. The above constants may be changed without notice has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant ...

Page 19

... ICT Caution1. The above constants may be changed without notice has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. In addition, the example of connection shown above and the constant do not guarantee proper operation. Perform through evaluation using the actual application to set the constant ...

Page 20

... SS Internal delay • In this IC, the output logic of the CO pin is inverted after several milliseconds of internal delay if this IC is under the overcharge condition even ICT pin is either “V • Any position from can be used when applying this IC for a one to three-cell battery. However, be sure to short circuit between pins not in use (SENSE − ...

Page 21

... Ta [°C] 3. Delay Time vs. Temperature Overcharge Detection Delay Time vs. Temperature S-8244AAAFN −40 − [°C] Caution Please design all applications of the S-8244 Series with safety in mind. Overcharge Release Voltage vs. Temperature V = 4.45 V S-8244AAAFN CU 4.17 4.07 3. 100 Current Consumption at Power Down vs. Temperature V = 14.0 V S-8244AAAFN ...

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... Seiko Instruments Inc. is strictly prohibited. • The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc. ...

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