Description

The series of HY2112 ICs is best created for single-cell LiFePO4 rechargeable battery protection and it also comprises high-accuracy voltage detectors and delay circuits.These ICs are suitable for protecting single-cell rechargeable LiFePO4 battery packs against the problems of overcharge, overdischarge and overcurrent. The features that whole series of HY2112 comprised are as follows: (1) High-accuracy voltage detection circuit ● Overcharge detection voltage 3.600 to 4.000V Accuracy: ±25mV ● Overcharge release voltage 3.400 to 4.000V Accuracy: ±50mV ● Overdischarge detection voltage 1.8 to 2.2V Accuracy: ±50mV ● Overdischarge release voltage 1.8 to 2.4V Accuracy: ±50mV ● Discharge overcurrent detection voltage (by option) Accuracy: ±15mV ● Charge overcurrent detection voltage (by option) ● Short-circuiting detection voltage 0.85V (fixed) Accuracy ±300mV (2)Delay times are generated by an internal circuit (external capacitors are unnecessary). (3) Low current consumption ● Operation mode 3.0μA typ., 6.0μA max. (VDD=3.2V) ● Ultra low power-down current at 0.1μA max. (4) High-withstanding-voltage device is used for charger connection pins (CS pin and OC pin: Absolute maximum rating = 20 V) (5) 0 V battery charge function “available” / “unavailable” are selectable (See Model List) (6) Wide operation temperature range −40°C to +85°C (7) Small package SOT-23-6 (8) The HY2112 series are Halogen-free, green package