Texas Instruments Power Supply Chip >> Battery Management ICs BQ25303JRTER

BQ25303JRTER is a highly integrated, standalone battery charger designed for single-cell lithium-ion and lithium-polymer batteries. It operates with an input voltage range of 4.1V to 17V and can deliver a maximum charging current of 3A. The device features a synchronous buck converter with a switching frequency of 1.2MHz, achieving charging efficiencies of 92.5% at 5V input and 91.8% at 9V input under a 2A load. The BQ25303JRTER includes several safety features such as thermal regulation, overvoltage protection, and battery overcharge protection. It also supports JEITA battery temperature monitoring, ensuring safe operation across varying temperature conditions. The device is packaged in a compact 3mm x 3mm WQFN format, making it suitable for space-constrained applications like portable devices, wireless speakers, and gaming accessories. Its low quiescent current of 200nA helps extend battery life during idle periods. Overall, this IC is designed for efficient and reliable battery management in various consumer electronics applications.