The BQ24257YFFR is an integrated circuit (IC) component that serves as a linear single-cell battery charger in a small form factor. It is designed for applications requiring a reliable and efficient charging solution for single-cell lithium-ion and lithium-polymer batteries.
One of the key features of the BQ24257YFFR is its ability to support a wide input voltage range from 4.5V to 18V, making it suitable for various power sources such as USB ports, wall adapters, and wireless power receivers. This flexibility ensures compatibility with different charging environments, enhancing its usability across a range of devices.
The IC component offers a high level of efficiency by utilizing a synchronous switch-mode architecture, which reduces power dissipation during charging. This results in better overall thermal management and prolongs battery life compared to traditional linear chargers.
The BQ24257YFFR also incorporates a thermal regulation and thermal shutdown feature to prevent the device from overheating. This protects the charger and connected battery from potential damage caused by excessive temperature.
Another notable feature of this IC component is its support for USB On-The-Go (OTG) functionality. It allows the charger to act as a power source for external USB devices, facilitating easy charging or power transfer between devices.
The IC includes various safety mechanisms to ensure safe charging operations. It incorporates voltage and current regulation controls to prevent overcharging and supports battery temperature monitoring to avoid charging in extreme temperatures
