ISL9216

DATASHEET ISL9216, ISL9217 8 to 12 Cell Li-Ion Battery Overcurrent Protection and Analog Front End Chip Set FN6488 Rev 1.00 November 2, 2007 The ISL9216 and ISL9217 chipset provides overcurrent protection and voltage monitoring for multi-cell li-ion battery packs consisting of 8 to 12 cells. 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 communication between the chips is handled automatically. Overcurrent and short circuit thresholds reside in internal RAM registers and are selected independently via software using an I2C serial interface. Detection and time-out delays can be individually varied using internal registers. Using an internal analog multiplexer, the device prov...