ISL9217 Overview
When used together, these devices provide integrated overcurrent protection circuitry, short circuit protection, an internal voltage regulator, internal cell balancing switches, cell voltage level shifters, and drive circuitry for external FET devices that control pack charge and discharge. Level shifting of the analog output voltage from the upper cells and munication between the chips is handled automatically....
ISL9217 Key Features
- Software selectable overcurrent protection levels and variable protect detection/release times
- 4 Discharge overcurrent thresholds
- 4 Short circuit thresholds
- 4 Charge overcurrent thresholds
- 8 Overcurrent delay times (Charge)
- 8 Overcurrent delay times (Discharge)
- 2 Short circuit delay times (Discharge)
- Automatic FET turn-off and cell balance disable on reaching external (battery) or internal (IC) temperature limit
- Automatic over-ride of cell balance on reaching internal (IC) temperature limit
- Fast short circuit pack shutdown