BQ51013BRHLR – TEXAS INSTRUMENTS

The BQ51013BRHLR is a Texas Instruments single-cell lithium-ion battery charger IC optimized for space-constrained applications. It features a highly integrated architecture incorporating a switching regulator, a charge termination algorithm, and over-current/over-temperature protection, all within a compact 6-pin WSON package. Operating from a 4.5V to 6V input, it delivers a precisely regulated charge current, adjustable via an external resistor, typically ranging from 50mA to 1000mA. The device employs a sophisticated constant-current/constant-voltage (CC/CV) charging method, automatically transitioning between phases to maximize battery lifespan and safety. Its low quiescent current (Iq < 5µA) contributes to extended battery runtime. The integrated thermal shutdown mechanism enhances reliability in demanding environments. Common applications include portable devices, wearables, and IoT gadgets requiring efficient and safe Li-ion battery charging with minimal external components. Its small footprint and integrated safety features make the BQ51013BRHLR a strong choice when board space and reliability are paramount. Note that the device requires external components for current setting and input voltage filtering.