Controller IC Chip - ISL9520HRTZ ISL9520 9520HRTZ 952 0HRTZ QFN-28

Narrow VDC Regulator/Charger with SMBus Interface Controller IC Chip - ISL9520HRTZ ISL9520 9520HRTZ 952 0HRTZ QFN-28

Συμβατά P/N & μοντέλα:

ISL9520HRTZ, ISL9520, 9520HRTZ, 952 0HRTZ

The ISL9520 is a highly integrated Narrow VDC system voltage regulator and battery charger controller. Operating parameters are programmable over the System Management Bus (SMBus). The ISL9520 is designed for applications where the system power source is either the battery pack or the output of the regulator/charger. This makes the max voltage to the system equal to the max battery voltage instead of the max adapter voltage. The ISL9520 also includes a patented system to control trickle charging deeply discharged batteries while maintaining system voltage at a user defined minimum. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation and variable switching frequency for enhanced light load efficiency and AC-adapter boosting prevention. The ISL9520 can charge two, three, or four series connected Lithium-ion cells, at up to 8A charge current. Default settings for 2-, 3- or 4-cell operation at power-up are selected by an external pin. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy.