The NB7120ZA105DHE2S from Nisshinbo Micro Devices is a Single-Cell Li-ion/Li-Polymer Rechargeable Battery protection IC that that is ideal for hearable wearable devices, smartphones, and handheld data terminal applications. This battery protection IC requires an input voltage of 1.5 - 5 V. It features high accuracy over-charge/discharge, over-current, and temperature protection capabilities for external high-side FET transistors and sense resistors. This IC incorporates a built-in short-circuit protector to prevent excessive external short-circuit currents. It supports temperature sensing by connecting a thermistor, which improves overall safety and reliability for battery management. This battery protection IC is available in a surface-mount package that measures 1.5 x 1.08 mm.