The DW01B, a lithium-ion/polymer battery protection IC, is engineered for safeguarding single-cell lithium-ion/polymer batteries in compact electronics, such as cellular phones, against risks including over-charge, over-discharge, and over-current conditions. This component's functionality enhances the longevity and reliability of battery-powered devices by preventing instances that could otherwise compromise battery health. With its ultra-small SOT-23-6 package, the DW01B facilitates integration into space-constrained battery packs. Highlight features include an ultra-low quiescent current of 2μA at 3.5V supply voltage, precise overcharge protection voltage at 4.30V ± 50mV, and over-discharge protection voltage set between 2.50V ± 75mV. Additionally, the IC features over-current protection with two levels of detection, a broad -40°C to +85°C operating temperature range, and requires minimal external components for operation. The DW01B's low standby current drain and accurate detection voltages ensure the safe and efficient management of battery charging and discharging processes, making it an essential component for developers aiming to optimize the performance and safety of portable electronic devices.