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S-8244AADFN-CEDT2G Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8244AADFN-CEDT2G Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 27 page Rev.3.3_00 BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION) S-8244 Series Seiko Instruments Inc. 1 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 • Overcharge detection voltage range : 3.70 to 4.50 V : Accuracy of ± 25 mV (at +25 °C) (at a 5 mV/step) Accuracy of ± 50 mV (at -40 to +85 °C) • Hysteresis : 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 (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 : 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) (7) Lead-free products Applications • Lithium ion rechargeable battery packs (secondary protection) Packages Drawing code Package name Package Tape Reel Land SNT-8A PH008-A PH008-A PH008-A PH008-A 8-Pin MSOP FN008-A FN008-A FN008-A |
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