BQ24070RHLR – TEXAS INSTRUMENTS

The BQ24070RHLR is a Texas Instruments single-cell Li-Ion/Li-Polymer battery charger IC optimized for low-power applications. It features a highly integrated architecture incorporating a switching charger, system-level power path management, and a dedicated battery gauge in a compact WSON-10 package. The device operates with an input voltage range of 2.7V to 5.5V, efficiently charging batteries with a typical voltage range of 2.7V to 4.35V, supporting a maximum charge current of 100mA. Its unique feature is the integrated 12-bit ADC for precise battery voltage and current monitoring, enabling accurate state-of-charge estimation._x000D_
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The BQ24070RHLR employs a constant-current/constant-voltage (CC/CV) charging algorithm with automatic termination. It incorporates various safety features including thermal shutdown, over-current protection, and short-circuit protection, enhancing robustness and reliability. Common applications include wearable devices, portable medical equipment, and other low-power battery-powered systems requiring precise battery management. Its advantages lie in its small size, low quiescent current (typically <1µA), high efficiency, and integrated battery gauging capabilities, simplifying design and reducing the overall bill of materials. The device's precise voltage regulation and integrated protection mechanisms make it ideal for applications demanding high accuracy and system reliability.