The New Battery Charger Offers the Industry’s Lowest Termination Current to Increase Battery Capacity and Durability

By | September 4, 2019

Texas Instruments (TI)  today presented a new integrated circuit (IC) for switching the battery charger  that supports a 20 mA breaking current. Compared to competing devices, which generally support a termination current greater than 60 mA.

TI BQ25619 allows a battery capacity of 7% higher and a longer operating time. The BQ25619 charger also offers a three-in-one pulse converter and ultra-fast load integration, with 95% efficiency at an output of 4.6V and 0.5A. In addition, the new charger with current lower standby time in the industry doubles the life of ready-to-use electronic products. For more product details, visit www.ti.com/BQ25619-pr.

BQ25619 Battery Charger IC

The BQ25619 charger helps engineers design more efficiently for small medical and personal electronic applications such as hearing aids, wireless charging headsets and cases, IP network cameras, patient monitoring devices, and personal care applications.

Important characteristics and benefits of BQ25619

  1. The lowest breaking current in the sector for replacing battery chargers: a very low breaking current of 20 mA increases battery capacity and operating time up to 7%. The BQ25619’s configurable charge timer further increases operating time, so users can load their devices less often.
  2. The best low standby current in its class: the BQ25619 reduces battery loss to 6 uA in transmission mode, saving the battery to double the life of the device. Although only battery-powered, the device only uses 10 uA to support standby systems.
  3. Integration of the three-in-one pulse converter: the BQ25619 incorporates integrated load, pulse converter, and voltage protection to support efficient design for limited space applications and eliminates the external inductor required by previous generation load circuits. Due to the bidirectional or integrated pulse topology, the loading and unloading capabilities of the BQ25619 require a single power supply.

The BQ25619 expands the portfolio of industry-leading solutions for TI chargers, with chargers with one or more cells for switching high-capacity batteries, as well as linear chargers with high integration to reduce battery operation time and reduce size total of the solution. Learn more about TI battery charging solutions for more accurate, reliable and faster charging.

Designers can use the BQ25619 evaluation module (EVM) to easily evaluate device functions and performance and accelerate time-to-market. The BQ25619EVM is available for $ 99.

The BQ25619 is now available at the TI store and authorized distributors. Offered in a lead-free package (WQFN) 24-pin wafer, the charger is priced at $ 1.45 in quantities of 1,000. The 30-pin BQ25618, with similar features, will be offered in the third quarter of 2019 in a smaller package (WCSP).

A battery is not sufficient in some events, and a system with more batteries is required. For example, wireless headphones require two batteries with limited space for each headphone and a low charge current, which is different from the design requirements for wireless charging cases. For these designs, TI provides the BQ25619 for wireless charging cases and the BQ25150 for charging headphones. The BQ25150 is an I2C-controlled linear charger with two low-fall linear controllers, a built-in analog to digital converter, less than 500 nA of standby current in low power mode and up to 500 mA charging current, all maintaining a solution with dimensions of 11 mm 2.