Higher battery capacity and longer life for small medical and personal electronics

The Texas Instruments BQ25619 supports a termination current of 20mA and enables 7% higher battery capacity and longer run time, in comparison to other devices in the industry. The device provides three-in-one boost converter integration and ultra-fast charging, offering 95% efficiency at a 4.6V and 0.5A output.

Furthermore, offering what is claimed to be the industry’s lowest quiescent current, the new charger can double the shelf life and assists engineers to design more efficiently for small medical and personal electronics applications including hearing aids, earbuds and wireless charging cases, IP network cameras, patient monitoring devices and personal care applications.

The charger offers numerous safety features for battery charging and system operations, incorporating charging safety timer, battery negative temperature coefficient thermistor monitoring, and overvoltage and over-current protections. Thermal regulation decreases charge current when the junction temperature exceeds 110C. The status register states the charging status and any fault conditions. With I2C, the VBUS_GD bit indicates if a good power source is present, and the INT output instantly notifies the host when a fault occurs.

The device also offers the QON pin for BATFET enable and reset control to exit low power ship mode or full system reset function.

The device is offered in 24-pin, 4mm x 4mm x 0.75mm thin WQFN package.