This is a charger IC designed specifically for lithium-ion and polymer batteries. It comes in a compact 10-pin small-outline package (10 MSOP). The specific part number mentioned, IC BATT CHG LI-ION 1CELL 10MSOP - Charger IC Lithium Ion/Polymer 10-MSOP-EP, suggests it's tailored for single-cell lithium-ion or polymer battery charging applications.