Dallas, Tex. - Texas Instruments (TI) has claimed the industry's first fully integrated 5-A single-cell lithium-ion (Li-ion) battery-charger circuit with proprietary MaxCharge technology that reduces charge time up to 60 percent compared to existing battery chargers, according to the company. The bq25892 switch-mode charger is said to provide a safer charging experience while still maximizing the benefits of a faster charge time.
“MaxCharge technology provides faster charge times and cooler charging to improve user experience and extend the overall life of electronics in many Li-ion applications, including smartphones, tablets, drones, power banks, and industrial and medical equipment,” said TI.
The highly efficient charger charges at 3.5A with minimal 18oC temperature rise, and provides up to 91 percent charging efficiency at 9Vin 3.5A with only an 18oC temperature rise. The charger can provide peak 9-A supplement current for an instant system-power burst. “Designers reduce excess heat by controlling the integrated circuit temperature and optimize thermal performance with a thermal-regulation loop,” said TI.
The bq25892 achieves faster and cooler charging by combining narrow-voltage DC/DC power path management with TI's MaxCharge technology to support input voltages up to 14V while providing charge current up to 5A. It is pin-to-pin compatibility with TI's bq24192 product family.
The I2C-controlled 1S, 5-A fast charger is featured in a new TI Designs reference design, TIDA-00538, using MaxCharge technology for high input voltage and adjustable USB OTG boost, which enables turn-key access to reduce battery-charging time and improve battery run time during the discharging phase, said TI.
Availability: The bq25892 charger is shipping in volume production and is available through the TI Store and the company's authorized distribution network. The products come in a 4-mm by 4-mm, 24-pin quad flat no-lead (QFN) package.
- TI's battery management solutions.
- MaxCharge Technology ‒ Faster Charge with More Mobility.
- Video: How to achieve fast charging with high efficiency.
- TI E2E™ Community Battery Management forum