概述
The LP7800S is an advanced TWS charging case management IC targeting to improve the total battery run time of the TWS earphones. The IC integrates a linear charger which contains completely charge modes with up to 350-mA charge current, and a smart discharge management module to protect the battery from over-discharged to maximize the battery run time. The IC features a high efficiency synchronous boost module,automatic load detection and Key control discharge, automatic shut-down while the discharge current is lower than the cut-off current threshold. The IC includes charging and discharging status indication through two LEDs controller. The quiescent current is less than 20-µA in standby mode. The device provides various safety features for battery charging and discharging, including device junction temperature-limit protection for charging by limiting the charge current, which is implemented by an internal thermal foldback regulation loop, battery discharge inductor current-limit protection, VOUT short protectionand thermal shutdown.The LP7800S is available in a small 8-pin ESOPpackage.
