S-8244 SII [Seiko Instruments Inc], S-8244 Datasheet
S-8244
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S-8244 Summary of contents
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... Packages Package name SNT-8A 8-Pin MSOP 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. Accuracy of ± (at +25 °C) Accuracy of ± ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) 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. ...
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... Refer to the taping specifications at the end of this book. *2. Refer to the Product Name List xxx direction of tape specifications Product name (abbreviation) Package abbreviation Serial code Seiko Instruments Inc. S-8244 Series *1 TF: SNT-8A T2: 8-Pin MSOP *2 PH: SNT-8A FN: 8-Pin MSOP Sequentially set from ...
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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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... VC3 6 VSS 7 ICT 8 CO Seiko Instruments Inc. S-8244 Series Table 3 Description FET gate connection pin for charge control Capacitor connection pin for overcharge detection delay Negative power input pin Negative voltage connection pin of Battery 4 Negative voltage connection pin of Battery 3 Positive voltage connection pin of Battery 4 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Absolute Maximum Ratings Item Input voltage between VCC and VSS Delay capacitor connection pin voltage V Input pin voltage (CMOS output) CO output (Nch open drain output) pin voltage (Pch open drain output) ...
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... V1=V2=V3=V4=2.3 V PDN I V1=V2=V3=V4=3.5 V VC1 I V1=V2=V3=V4=3.5 V VC2 I V1=V2=V3=V4=3.5 V VC3 = 10 µ CO(H) OUT −0. µA CO(L) OUT Seiko Instruments Inc. S-8244 Series ( unless otherwise specified) °C Min. Typ. Max. Unit V V CU1 CU1 V V CU1 +0.025 V V CU2 CU2 V V CU2 +0.025 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Test Circuits (1) Test Condition 1, Test Circuit 1 Conditions: • Set switches 1 and 2 to OFF for CMOS output models. • Set switch and switch 2 to OFF for Nch open drain models. • Set switch 1 to OFF and switch for Pch open drain models. ...
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... V4 voltage when CO is turned to “H” (for CU4 ) is defined as a difference between V CD4 ) is the period from when V1 goes 4 when the current consumption (I3) as VC2 sink current VC1 ), respectively. VC3 Seiko Instruments Inc. S-8244 Series and V4 when CO CU4 ). PDN ), the OPE 9 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series (7) Test Condition 7, Test Circuit 4 Conditions: • Set switch 1 to OFF and switch 2 to ON. Definitions: • Set V1, V2, V3 and V4 to 4.6 V and gradually decrease V6 from V models). V6 voltage is defined as V • Set V1, V2, V3 and V4 to 3.5 V and gradually decrease V6 from V Pch open drain models) ...
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... Please note that the maximum capacitance connected to the delay capacitor pin (ICT pin µ varies depending upon the external capacitor. Min. Typ. (10, 15, Seiko Instruments Inc. S-8244 Series Attaching FET to the CO pin provides charge ) by the equivalent to the overcharge CU Max. 20) × C [µF] ICT ...
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... 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 ...
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... FAX: +81-3-5435-3072 R VCC SENSE VCC C VCC VC1 VC2 ICT C ICT VC3 VSS CO Figure 7 Min. Typ. Max 0 100 0 0.1 1 Seiko Instruments Inc. S-8244 Series SC PROTECTOR EB+ FET EB- Unit Ω µ F Ω µ F µ addition, the example of 13 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series (2) Connection Example 2 R1 BAT1 R2 BAT2 R3 BAT3 R4 BAT4 Symbol VCC C VCC C 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 ...
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... In the case of Nch open drain output, pull up CO pin by external resistor. R VCC SENSE VCC C VCC VC1 VC2 ICT C ICT VC3 VSS CO Figure 9 Min. Typ. Max 0 100 0 0.1 1 Seiko Instruments Inc. S-8244 Series SC PROTECTOR EB+ FET EB- Unit Ω µ F Ω µ F µ addition, the example of 15 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series (4) Connection Example 4 (for 2-cells) R1 BAT1 R2 BAT2 Table 10 Constants for External Components 4 Symbol R1 VCC C VCC C 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 ...
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... In the case of Nch open drain output, pull up CO pin by external resistor. R VCC SENSE VCC C VCC VC1 VC2 ICT C ICT VC3 VSS CO Figure 11 Min. Typ. Max 0 100 0 0.1 1 Seiko Instruments Inc. S-8244 Series SC PROTECTOR EB+ FET EB- Unit Ω µ F Ω µ F µ addition, the example of 17 ...
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... BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Precautions • This IC charges the delay capacitor through the delay capacitor pin (ICT pin) immediately when the voltage of one of batteries reaches the overcharge voltage. Therefore, setting the resistor connected to the VCC pin to any value greater than the recommended level causes a reduction in the IC power supply voltage because of charge current of the delay capacitor ...
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... Ta( ° Delay Time vs. Temperature Overcharge Detection Delay Time vs. Temperature S-8244AAAFN -40 - Ta( ° C) Caution Please design all applications of the S-8244 Series with safety in mind. Overcharge Release Voltage vs. Temperature = 4.45( S-8244AAAFN 100 Current Consumption at Power Down vs. Temperature = 14.0(V) V ...
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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 ...