Texas Instruments’ Latest Battery Charger Claims Industry’s Lowest Termination Current

September 9, 2019 Alix Paultre

Texas Instruments introduced the BQ25619 switching battery charger IC, which supports a termination current of 20 mA, enabling higher battery capacities and longer run times. The charger also delivers three-in-one boost converter integration and 95 percent efficiency at a 4.6V and 0.5A output. Presented as having the industry’s lowest quiescent current, the charger can double the shelf life of ready-to-use electronics.

Key features and benefits of the BQ25619:

•        An ultra-low termination current of 20 mA increases battery capacity and run time by up to 7 percent. The BQ25619’s settable top-off timer further increases run time, enabling users to charge their devices less frequently.

•        The BQ25619 reduces battery leakage down to 6 uA in ship mode, which conserves battery energy to double the shelf life for the device. While in battery-only operation, the device consumes only 10 uA, to support standby systems.

•        The BQ25619 includes integrated charge, boost converter and voltage protection to support efficient design for space-constrained applications and eliminates the external inductor required by previous-generation charger ICs. Due to its integrated bidirectional buck or boost topology, the BQ25619’s charging and discharging capabilities require just a single power device.

Designers can use the BQ25619 evaluation module (EVM) to easily evaluate the device’s features and performance and speed time to market. The BQ25619EVM is available for US$99. Offered in a 24-pin wafer quad flatpack no-lead (WQFN) package, the charger is priced at US$1.45 in 1,000-unit quantities. The 30-pin BQ25618, with similar features, will be offered in a smaller wafer chip-scale package (WCSP) in the third quarter of 2019.

Learn more at www.ti.com.

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