SYALIS ELECTRICAL STORE

1. General Description
The series of 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.
2. Features
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
– Overcharge release voltage VCRn
(n=1, 2) 3.90 to 4.30V
– Overdischarge detection voltage VDLn (n=1, 2) 2.00 to 3.20V
– Overdischarge release voltage VDRn (n=1, 2) 2.30 to 3.40V
– Discharge overcurrent detection voltage
– Charge overcurrent detection voltage
– Short-circuiting detection voltage
(by option)
(by option)
1.0V(fixed)
Accuracy ±25mV
Accuracy ±50mV
Accuracy ±80mV
Accuracy ±100mV
Accuracy ±30mV
Accuracy ±0.4V
(2)Delay times are generated by an internal circuit (external capacitors are unnecessary).
– Overcharge delay time
– Overdischarge delay time
– Discharge overcurrent delay time
– Charge overcurrent detection voltage
– Short circuit delay time
1000ms typ.
.
110ms typ.
10ms typ.
7ms typ.
250us typ.
(3) Low current consumption(Products with Power-down Function)
– Operation mode
– Ultra low power-down current at
5.0uA typ., 9.0uA max. (VDD=7.8V)
0.1uA max. (VDD=4.0V)
(4) High-withstanding-voltage device is used for charger connection pins
(CS pin and OC pin : Absolute maximum rating = 33 V)
(5) 0 V battery charge function “available” / “unavailable” are selectable
(6) Wide operating temperature range -40°C to +85°C
(7) Small package
SOT-23-6
(8) The HY2120 series are Halogen-free, green package