The PT6307ESST-AA is a power management integrated circuit (PMIC) manufactured by CR-PowTech. It is a battery management system with a small outline package (SSOP) in a 20-pin RoHS configuration. The IC provides smart charging and protection for lithium-ion battery packs. The PT6307ESST supports up to 2A of charging current and a wide battery voltage range of 3.3 ~ 4.5 V. It provides protection from overvoltage, overcurrent, overtemperature, and short-circuits. The PT6307ESST-AA is widely used in digital products like notebook PC, tablet PC, TVs, set top boxes, and gaming devices.