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S8223A Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S8223A Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 30 page S-8223A/B/C/D Series www.sii-ic.com BATTERY PROTECTION IC FOR 2-SERIAL / 3-SERIAL CELL PACK (SECONDARY PROTECTION) © SII Semiconductor Corporation, 2017 Rev.1.0_00 1 The S-8223A/B/C/D Series is used for secondary protection of lithium-ion rechargeable batteries, and incorporates high-accuracy voltage detection circuits and delay circuits. Short-circuits between cells accommodate series connection of two cells or three cells. The S-8223B/D Series limits its CO pin output voltage to 11.5 V max., so an FET with the gate withstand voltage of 12 V can be used. Features • High-accuracy voltage detection circuit for each cell Overcharge detection voltage n (n = 1 to 3) 3.600 V to 4.700 V (50 mV step) Accuracy ±20 mV (Ta = +25°C) Accuracy ±25 mV (Ta = −10°C to +60°C) Overcharge hysteresis voltage n (n = 1 to 3) *1 0.0 mV to −550 mV (50 mV step) −300 mV to −550 mV Accuracy ±20% −100 mV to −250 mV Accuracy ±50 mV −50 mV Accuracy ±25 mV 0.0 mV Accuracy −25 mV to +20 mV • Delay times for overcharge detection are generated only by an internal circuit (external capacitors are unnecessary) Overcharge detection delay time is selectable: 1 s, 2 s, 4 s, 6 s, 8 s Overcharge release delay time is selectable: 2 ms, 64 ms • Built-in timer reset delay circuit • Output form is selectable (S-8223A/C Series): CMOS output, Nch open-drain output • Output logic is selectable (S-8223A/C Series): Active "H", active "L" • CO pin output voltage is limited to 11.5 V max. (S-8223B/D Series) *2 • High-withstand voltage: Absolute maximum rating 28 V • Wide operation voltage range: 3.6 V to 28 V • Wide operation temperature range: Ta = −40°C to +85°C • Low current consumption During operation (VCU − 1.0 V for each cell): 0.25 μA typ., 0.5 μA max. (Ta = +25°C) During overdischarge (VCU × 0.5 V for each cell): 0.3 μA max. (Ta = +25°C) • Lead-free (Sn 100%), halogen-free *1. Select the overcharge hysteresis voltage calculated as the following formula. (Overcharge detection voltage n) + (Overcharge hysteresis voltage n) ≥ 3.4 V *2. Only output logic active "H" is available. Application • Lithium-ion rechargeable battery packs (for secondary protection) Package • SNT-6A |
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