Single-cell 5-A battery-charger IC cuts battery-charge times 60 percent
The bq25892 switch-mode charger gives users a safer charging experience while still maximizing the benefits of a faster charge time, currently unseen in the industry. 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.
The highly efficient charger, which charges at 3.5 A with minimal 18oC temperature rise, facilitates faster and cooler charging by combining narrow-voltage DC/DC power path management with TI’s MaxCharge technology to support input voltages up to 14 V while providing charge current up to 5 A.
Features and benefits:
- Fastest charging by supporting high-input voltages: The industry’s first single-cell Li-ion battery charger to support 5 A of current and input voltages up to 14 V.
- Highest efficiency: Provides up to 91 percent charging efficiency at 9 Vin 3.5 A with only an 18oC temperature rise.
- Safer charging: Designers reduce excess heat by controlling the integrated circuit temperature and optimize thermal performance with a thermal-regulation loop.
- High battery supplement current: The charger can provide peak 9 A supplement current for an instant system-power burst.
The fast-charging battery charger is designed to work in single-cell portable devices with TI battery fuel gauges. For example, pair a TI MaxCharge technology device with TI MaxLife battery fuel gauge technology to ensure longer battery life and safer charging of portable electronics.
The I2C-controlled 1S, 5-A fast charger is featured in a new TI Designs reference design, TIDA-00538, utilizing 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.
Availability and Pricing
The bq25892 charger is shipping in volume production and 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. The bq25890 and bq25892, for smartphones and tablets, is priced at $2.50 in 1,000-unit quantities. In addition, TI introduced its new bq25895, which supports power banks and is priced at $2.00.
www.ti.com
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