HY2120-DB 2S lithium battery protection IC SOT23-6

Description

HY2120 ICs is best created for 2-cell lithium-ion/lithium polymer rechargeable battery protection and it also comprises high-accuracy voltage detectors and delay circuits. These ICs are suitable for protecting 2-cell rechargeable lithium-ion/lithium polymer battery packs against the problems of overcharge, overdischarge and overcurrent. Technical parameters: The features that whole series of HY2120 comprised are as follows: (1) High-accuracy voltage detection circuit ● Overcharge detection voltage VCUn (n＝1, 2) 4.10 to 4.50V Accuracy ±25mV ● Overcharge release voltage VCRn (n＝1, 2) 3.90 to 4.30V Accuracy ±50mV ● Overdischarge detection voltage VDLn (n＝1, 2) 2.00 to 3.20V Accuracy ±80mV ● Overdischarge release voltage VDRn (n＝1, 2) 2.30 to 3.40V Accuracy ±100mV ● Discharge overcurrent detection voltage (by option) ● Charge overcurrent detection voltage (by option) Accuracy ±30mV ● Short-circuiting detection voltage 1.0V(fixed) Accuracy ±0.4V (2)Delay times are generated by an internal circuit (external capacitors are unnecessary). ● Overcharge delay time 1000ms typ. ● Overdischarge delay time 110ms typ. ● Discharge overcurrent delay time 10ms typ. ● Charge overcurrent detection voltage 7ms typ. ● Short circuit delay time 250μs typ. (3) Low current consumption(Products with Power-down Function) ● Operation mode 5.0μA typ., 9.0μA max. (VDD=7.8V) ● Ultra low power-down current at 0.1μA max. (VDD=4.0V) (4) High-withstanding-voltage device is used for charger connection pins (CS pi