Texas Instruments BQ24156 Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB-Compliance, VOVP=9.8v BQ24156YFFT

The BQ24156YFFT is a fully integrated switch-mode battery charger designed for single-cell Li-Ion and Li-Polymer batteries. It features high-efficiency charging with a maximum charge current of 1.5 A and supports USB compliance along with USB-OTG functionality. The device operates with an input voltage range from 2.5 V to 20 V and includes built-in input current sensing and limiting, ensuring safe operation. This charger employs a three-phase charging process: conditioning, constant current, and constant voltage, with programmable charge parameters accessible via an I¬=C interface. It offers high accuracy in voltage and current regulation, with input current regulation accuracy of ¬±5% and charge voltage regulation accuracy of ¬±0.5% at 25¬8C. The BQ24156YFFT also includes robust protection features such as overvoltage protection and thermal regulation. The compact 20-pin WCSP package makes it suitable for space-constrained applications, including mobile phones, MP3 players, and handheld devices. The device's automatic high impedance mode helps reduce power consumption when not in use. Overall, the BQ24156YFFT is a versatile and efficient solution for battery management in portable electronics.