Описание
The S-8252 Series is a protection IC for 2-serial-cell lithium-ion / lithium polymer rechargeable batteries and includes highaccuracy voltage detection circuits and delay circuits. The S-8252 Series is suitable for protecting 2-serial-cell rechargeable lithium-ion / lithium polymer battery packs from overcharge, overdischarge, and overcurrent.
High-accuracy voltage detection function for each cell Overcharge detection voltage n (n = 1, 2) 3.550 V to 4.600 V (5 mV steps) Accuracy ±20 mV (Ta = +25°C) Accuracy ±25 mV (Ta = -10°C to +60°C) Overcharge release voltage n (n = 1, 2) 3.150 V to 4.600 V*1 Accuracy ±30 mV Overdischarge detection voltage n (n = 1, 2) 2.00 V to 3.00 V (10 mV steps) Accuracy ±50 mV Overdischarge release voltage n (n = 1, 2) 2.00 V to 3.40 V*2 Accuracy ±100 mV Discharge overcurrent detection voltage 0.05 V to 0.40 V (10 mV steps) Accuracy ±10 mV Load short-circuiting detection voltage 0.5 V (fixed) Accuracy ±100 mV Charge overcurrent detection voltage -0.40 V to -0.05 V (25 mV steps) Accuracy ±20 mV Charge overcurrent detection function “available” / “unavailable” is selectable Detection delay times are generated only by an internal circuit (external capacitors are unnecessary). Accuracy ±20% High-withstand voltage device is used for charger connection pins (VM pin and CO pin: Absolute maximum rating = 28 V) 0 V battery charge function “available” / “unavailable” is selectable Power-down function “available” / “unavailable” is selectable Wide operation temperature range Ta = -40°C to +85°C Low current consumption During operation 8.0 µA max. (Ta = +25°C) During power-down 0.1 µA max. (Ta = +25°C) Lead-free (Sn 100%), halogen-free
