HIGHLAND ELECTRONICS CO., LTD
SIT2122 2-Cell LiFePO4 Battery Packs Protection ICs (PIN TO PIN HY2122)
Package: SOT23-6
General Description
The series of SIT2122 ICs is best created for 2-cell LiFePO4 battery protection and it also comprises high-accuracy voltage detectors and delay circuits.
These ICs are suitable for protecting 2-cell LiFePO4 battery packs against the problems of overcharge, overdischarge and overcurrent.
Application
2-cell LiFePO4 rechargeable battery packs
Features
High-accuracy voltage detection circuit
|
Overcharge detection voltage VCUn (n＝1,2) |
3.650V |
Accuracy |
±25mV |
|
Overcharge release voltage VCRn (n＝1,2) |
3.400V |
Accuracy |
±25mV |
|
Overdischarge detection voltage VDLn (n＝1,2) |
2.000V |
Accuracy |
±100mV |
|
Overdischarge release voltage VDRn (n＝1,2) |
2.500V |
Accuracy |
±100mV |
|
Discharge overcurrent detection voltage Charge overcurrent detection voltage |
(by option) (by option) |
Accuracy |
±30mV |
|
Short-circuiting detection voltage |
1.0V(fixed) |
Accuracy |
±0.2V |
Delay times are generated by an internal circuit (external capacitors are unnecessary).
Overcharge delay time 1300ms typ.
Discharge overcurrent 1 delay time 10ms typ.
Discharge overcurrent 2 delay time 5ms typ.
Charge overcurrent detection voltage 10ms typ.
Short circuit delay time 200μs typ.
Low current consumption (Products with Power-down Function)
Operation mode 5.0μA typ., 9.0μA max. (VDD=6.4V)
Ultra low power-down current at 0.1μA max.
High-withstanding-voltage device is used for charger connection pins (CS pin and OC pin : Absolute maximum rating = 32 V)
0 V battery charge function
Wide operating temperature range −40°C to +85 °C
SIT2122 is Halogen-free, green package
Typical Application Circuit
