Provides a maximum charging current of 5A across 3.6~24V
Supports OTG charging, supports both forward and reverse charging.
Extends battery life by keeping standby current below 1µA.


Power adapters for not only personal but also industrial electronic devices are expected to be rapidly replaced by USB-PD (Power Delivery).

Texas Instruments (TI) held an online press conference on the 2nd and announced two types of buck-boost battery charger ICs.

The BQ25790 and BQ25792 provide a charging current of up to 5A across the full input voltage range (3.6–24V) for USB Type-C and USB PD applications, and can charge batteries with 1 to 4 cells connected in series. The dual input selector supports various power sources, including wireless, USB, barrel jack, and solar charging, while supporting 97% efficiency charging at 30W.

Universal charging functionality enables charging portable medical devices, such as blood pressure monitors or low-power continuous positive airway pressure (CPAP) equipment, using car adapters or USB-PD adapters. In addition, it supports OTG (On-The-Go) charging and allows for both forward and reverse charging.

Developers can reduce the size of the solution and the number of components by integrating a switching MOSFET, battery FET, current sensing circuit, and dual input selector with the BQ25790 and BQ25792, which provide 155mW/ ^mm² (100W/ ^in² ) of power.

The BQ25790 and BQ25792 are multi-cell buck-boost battery chargers with a standby current of less than 1µA. With dual power-saving modes and shutdown functions, they can provide up to 10 times lower standby current, offering more than five times longer lifespan compared to competing devices. By utilizing 8mΩ battery FET resistance, engineers can extend battery runtime for applications requiring long-term operation.

Samuel Wong, Product Manager for TI Battery Management Solutions, stated, “Utilizing TI’s USB-PD charging solution enables universal charging for not only personal appliances but also industrial devices,” adding, “Previously, industrial devices had to use dedicated adapters due to demanding power requirements, but now that need will be reduced.”

The BQ25790 is available in a 2.9×3.3mm 56-pin WCSP package, while the BQ25792 is available in a 4×4mm 29-pin QFN package. Both products are currently available for purchase through TI and authorized distributors. Bulk or custom reel orders are also available through TI.com and other distribution channels. Pricing for both products starts at $2.99 for 1,000-unit orders. The BQ25790EVM evaluation module can be purchased on TI.com for $149, with various payment and shipping options available.