The TS2207A/B series are protection ICs design to safe guard one-cell Lithium-ion battery pack against over charge/discharge, over current and short circuit. The TS2207A/B series use advanced high voltage CMOS process to provide high accuracy voltage detection and low current consumption. The TS2207A/B series incorporate a reference unit and three voltage detectors. During charging process, when the cell voltage(VDD) is charged to a value higher than the over-charge threshold voltage (VC1), the over charge detector (COM1) will switch the output pin (COUT) to a low level within a delay time (tC1), and thus turning off the MOSFET connected to the charging path. The COUT pin may change to high level again when the VDD voltage falls below "VC1-VHYS", or when VDD falls below VC1 while the charger is disconnected from the battery pack. During the discharging process, when the VDD voltage drops to a value lower than the over-discharge threshold voltage (VD1), the over-discharge detector (COM2) will switch DOUT to low level within a delay time (tD1), and thus turning off the MOSFET connecting the discharging path. In the mean time, the TS2207A/B series will enter a low current standby mode. Once into standby mode, the system can only be released from standby mode right after the battery pack is connected to a charger.