s-8244aafph-ceftfg Seiko Instruments Inc., s-8244aafph-ceftfg Datasheet

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s-8244aafph-ceftfg

Manufacturer Part Number
s-8244aafph-ceftfg
Description
Battery Protection Ic For 1-serial To 4-serial-cell Pack Secondary Protection
Manufacturer
Seiko Instruments Inc.
Datasheet

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Part Number:
S-8244AAFPH-CEFTFG
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Part Number:
S-8244AAFPH-CEFTFG
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SEIKO
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Rev.3.5
BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK
(SECONDARY PROTECTION)
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 products
• Lithium ion rechargeable battery packs (secondary protection)
SNT-8A
8-Pin MSOP
• Overcharge detection voltage range : 3.70 V to 4.50 V : Accuracy of ± 25 mV (at +25°C)
• Hysteresis :
Package name
_00
PH008-A
FN008-A
Package
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.
accommodate series connection of one to four cells.
(at a 5 mV/step)
5 optional models available and selectable:
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)
4 types
CMOS output active “H”
CMOS output active “L”
Pch open drain output active “L”
Nch open drain output active “H”
(only CMOS output for 0.045 V hysteresis models)
Seiko Instruments Inc.
PH008-A
FN008-A
Tape
Accuracy of ± 50 mV (at −40°C to +85°C)
Drawing code
PH008-A
FN008-A
Reel
S-8244 Series
Short-circuits between cells
PH008-A
Land
1

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s-8244aafph-ceftfg Summary of contents

Page 1

... V, 0.25 ± 0.07 V, 0.13 ± 0.04 V, 0.045 ± 0.02 V, None Absolute maximum rating : (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 µ ...

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... 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 ...

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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) Rev.3.5 _00 Product Name Structure 1. Product Name S-8244A xx xx *1. Refer to the tape specifications at the end of this book. *2. Refer to the Product Name List. - xxx direction of tape specifications TF: SNT-8A T2: 8-Pin MSOP Product name (abbreviation) ...

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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series 2. Product Name List (1) SNT-8A Product name/Item S-8244AAAPH-CEATFG S-8244AABPH-CEBTFG S-8244AAFPH-CEFTFG S-8244AAGPH-CEGTFG S-8244AAVPH-CEVTFG S-8244AAYPH-CEYTFG S-8244AAZPH-CEZTFG Remark Please contact our sales office for the products with the detection voltage value other than those specified above ...

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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) Rev.3.5 _00 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 Pin No. Symbol ICT VCC SENSE ...

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... Board size : 114.3 mm × 76.2 mm × t1.6 mm (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 4 Power Dissipation of Package (When Mounted on Board) 6 Table 5 ...

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... 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 ...

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... Nch open drain) or “L” (for CMOS output active “L” or Pch open drain). • Next, gradually decrease V1: Overcharge hysteresis voltage (V to “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active “L” or Pch open drain). (2) Test Condition 2, Test Circuit 1 Conditions: • ...

Page 9

... Set switch 1 to OFF and switch for Pch open drain models. Definition: • Set V1, V2, V3 and V4 to 3.5 V and momentarily rise V1 to 4.7 V within 10 µ s. Overcharge detection delay time (t (for CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” or Pch open drain). ...

Page 10

... Set V1, V2, V3 and V4 to 4.6 V and gradually increase V6 from 0 V (for CMOS output active “L” models). V6 voltage is defined as V • Set V1, V2, V3 and V4 to 3.5 V and gradually increase V6 from 0 V (for CMOS output active “H” or Nch open drain models). V6 voltage is defined MΩ ...

Page 11

... Operation Overcharge Detection CO is turned to “H” (for CMOS output active “H” or Nch open drain models) or “L” (for CMOS output active “L” or Pch open drain models) when the voltage of one of the batteries exceeds the overcharge detection voltage (V during charging under normal conditions beyond the overcharge detection delay time (t “ ...

Page 12

... 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 models CMOS output active “L” and CO pin voltage Pch open drain models ...

Page 13

... 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 14

... 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 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

... V SS • 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 19

... Ta [°C] 3. Delay Time vs. Temperature Overcharge Detection Delay Time vs. Temperature S-8244AAAFN −40 −20 Ta [°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 ...

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... Use of the information described herein for other purposes and/or reproduction or copying without the express permission of 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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