BQ2000TSN-B5G4 – TEXAS INSTRUMENTS

The BQ2000TSN-B5G4 is a Texas Instruments single-cell Li-Ion/Li-Polymer battery charger IC optimized for low-power applications. It features a highly integrated design incorporating a switching regulator, a charge termination algorithm, and a low-power shutdown mode, all within a space-saving 6-pin SOT-23 package. The device operates from a 2.7V to 5.5V input voltage range, efficiently charging a single-cell battery with a typical charging current of 100mA. Its charge termination is based on a sophisticated algorithm utilizing both voltage and current monitoring to prevent overcharging and maximize battery lifespan. The BQ2000TSN-B5G4 incorporates thermal regulation to ensure safe operation across varying ambient temperatures. Its low quiescent current of <1µA in shutdown mode makes it ideal for battery-powered devices requiring extended standby time. The integrated power path management ensures a seamless transition between charging and discharging. Common use cases include wearable electronics, remote sensors, and other low-power portable devices where small size, high efficiency, and precise charge control are critical design parameters. The device's advantages lie in its simplified design, reduced component count, and inherent safety features, resulting in a cost-effective and reliable charging solution.