The LP4032 is a standalone 1-cell switching battery charger providing up to 2A charge current to the battery from 4.1V to 6.2V input voltage. The charge current is programmable by a resistor connected from ISET to GND and the charge voltage is programmable by a resistor connected from VSET to GND. The charge can be enabled and disabled from ISET pin. The LP4032 operates at 1.2MHz switching frequency allowing a small-size 1uH inductor for 2A fast charging. The patent-protected integrated current sensing technique eliminates external sensing resistor allowing very high charge efficiency, low BOM cost and very small footprint (20mmx10mm). The precharge, fastcharge and termination current accuracy is competitive with external-resistor-based current sensing architecture. LP4032 is available in DFN3x3-10 package.
