AB1680 Li-ion battery single chip protector IC is a full customized designed IC for single cell Li-ion battery supply system, to protect the battery from damaging and life time declining because of over charging, over discharging and over current. The high level of integration combined with a miniature package footprint and power switcher circuit gives one of the industries smallest single-cell battery protection solutions available today, and can be perfectly integrated to the limited space of the battery package. High accuracy ±25mV over-charge detector threshold insures the safety and integrity for charging. Ultra-low power design enable the chip consume little power during battery operation and storage. It is used for the protection of the Li-ion battery for mobile phone, PDA, MP3, digital camera, notebook PC, etc..