The BQ24157SYFFR is an integrated circuit (IC) component designed and manufactured by Texas Instruments. This IC is a highly integrated single-chip battery charger targeted for portable applications like smartphones, tablets, and other handheld devices. It offers several key features that make it an efficient and reliable choice for battery charging needs.
One of the primary features of the BQ24157SYFFR is its high integration. The IC combines a synchronous switch-mode charger with a USB detection, accurate current sensing, impedance track battery system, and various protection features. This integration allows for a compact design and reduces the need for external components, saving valuable PCB space.
The IC supports input voltages ranging from 3.9V to 6.2V, which makes it compatible with a wide range of power sources, including USB ports and USB power adapters. It features dynamic power path management, enabling the system to power the load while simultaneously charging the battery. This feature allows for uninterrupted device usage even when the battery is low.
Another notable feature of the BQ24157SYFFR is its advanced charging algorithms. It utilizes the impedance track battery management system, which continuously monitors the battery impedance and provides optimal charging current to achieve maximum battery capacity and extend battery life. The IC also supports various charging modes, including constant voltage, constant current, and pre-charge.
To ensure safe charging, the IC incorporates multiple protection mechanisms such as thermal regulation, overvoltage protection, and short circuit protection
