S-8224A

S-8224A/B Series www.ablic.com © ABLIC Inc., 2017-2023 BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL CELL PACK (SECONDARY PROTECTION) Rev.1.4_00 The S-8224A/B 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 to four cells. The S-8224B Series limits its CO pin output voltage to 11.5 V max., so a 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 4) 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 4)*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 Overcharge timer reset function: Available, unavailable Output control function via CTL pin Output form is selectable (S-8224A Series): CMOS output, Nch open-drain output Output logic is selectable (S-8224A Series): Active "H", active "L" CO pin output voltage is l...