The ISL9212A is an integrated circuit (IC) optimized to provide a Li-ion battery redundant safety protection from failures of a charging system. The IC monitors the input voltage, the battery voltage, and the charge current. When any of the three parameters exceeds its limit, the IC turns off an internal P-channel MOSFET to remove the power from the charging system. In addition to the above protected parameters, the IC also monitors its own internal temperature and turns off the P-channel MOSFET when the die temperature exceeds +140°C. Together with the battery charger IC and the protection module in a battery pack, the charging system using the ISL9212A has triple-level protection and is two-fault tolerant.
The IC is designed to turn on the internal PFET slowly to avoid inrush current at power-up but will turn off the PFET quickly when input overvoltage is detected, in order to remove the power before any damage occurs. The ISL9212A has a logic warning output to indicate the fault and an enable input to allow the system to remove the input power.
| 芯片型号 | 产品状态 | 温度范围 | 封装尺寸图 |
| ISL9212AIRZ | 量产 | 工业级 | 12 Ld DFN |
| ISL9212AIRZ-T | 量产 | 工业级 | 12 Ld DFN T+R |