The PJ4054B is an SOT-23-5 Battery Management IC with RoHS certification from Pingjingsemi. It’s designed to monitor and control battery use in portable electronic devices. It helps to ensure efficiency and protect against damage with features like high accuracy cell voltage measurement, over-temperature and over-discharge protection, cell voltage balancing, and open-collector short circuit protection. It features cell voltage accuracy of ±10mV, output voltage accuracy up to ±2mV, and a wide operating temperature range of -40°C to +85°C. It supports up to 6-cell battery packs and is ideal for use in notebooks and other consumer electronics. It is RoHS compliant and delivers an unbeatable combination of performance, cost-effectiveness, flexibility, and reliability.