Описание
The S-8253A Series are protection ICs for 2-serial or 3-serial cell lithium-ion rechargeable batteries and include highaccuracy voltage detectors and delay circuits. These ICs are suitable for protecting lithium-ion rechargeable battery packs from overcharge, overdischarge and overcurrent.
High-accuracy voltage detection for each cell Overcharge detection voltage n (n = 1 to 3) 3.9 V to 4.4 V (50 mV steps) Accuracy ±25 mV Overcharge release voltage n (n = 1 to 3) 3.8 V to 4.4 V Accuracy ±50 mV Overdischarge detection voltage n (n = 1 to 3) 2.0 V to 3.0 V (100 mV steps) Accuracy ±80 mV Overdischarge release voltage n (n = 1 to 3) 2.0 V to 3.4 V Accuracy ±100 mV Three-level overcurrent detection (Including load short circuiting detection) Overcurrent detection voltage 1 0.05 V to 0.30 V (50 mV steps) Accuracy ±25 mV Overcurrent detection voltage 2 0.5 V (Fixed) Overcurrent detection voltage 3 1.2 V (Fixed) Delay times (Overcharge, Overdischarge, Overcurrent) are generated by an internal circuit. (External capacitors are unnecessary) Charge / discharge operation can be inhibited via the control pin 0 V battery charge function available / unavailable are selectable High-voltage withstand devices Absolute maximum rating 26 V Wide operating voltage range 2 V to 24 V Wide operating temperature range -40°C to +85°C Low current consumption Operation mode 28 µA max. (+25°C) Power-down mode 0.1 µA max. (+25°C) (10) Lead-free, Sn100%, halogen-free
