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TI Power Management Chip Extends Battery Life in Li-Ion Powered Multimedia Devices

Buck-Boost DC/DC Converter Delivers up to 96 Percent Efficiency over a Wide Input Voltage Range Down to 1.8 V

Apr 3, 2006

DALLAS (April 3, 2006) - Texas Instruments Incorporated (TI) (NYSE: TXN) announced today a buck-boost power management integrated circuit (IC) that helps extend battery life in smart phones, digital still cameras and other single-cell, lithium-ion (Li-Ion) powered multimedia devices. The DC/DC converter delivers up to 96 percent efficiency over a wide input voltage range of 1.8 V to 5.5 V, while generating an output current up to 1.2 A. See: www.ti.com/tps63000-pr.

"Portable designers continue to face an uphill battle when it comes to getting more out of their battery," said Dave Heacock, vice president of TI's portable power management business. "Texas Instruments continues to work closely with the top 3G wireless handset, digital still camera and other portable electronics makers to ensure they are maximizing all of the potential energy in a Li-Ion battery and meet consumers' appetites for extended battery life."
TI's new TPS63000 buck-boost converter provides up to 28 percent greater run-time compared to a standard high-efficiency buck converter with a 3.3 V output - all from a space- saving 3 x 3 mm2 QFN package. Based on a fixed frequency, pulse-width modulation (PWM) technique, the device uses synchronous rectification to maintain high efficiency to support today's single-cell Li-Ion batteries. In addition, the TPS63000's ability to support input voltages as low as 1.8 V allows designers to implement newer, denser lithium-based battery chemistries in TI OMAPTM processor-based handsets and other multimedia applications.
Efficiently delivering step-up and step-down DC/DC conversion with adjustable output voltages down to 1.2 V, the device offers an extremely low quiescent current of less than 30 µA, and advanced power savings and voltage protection features. The TPS63000 enters a power save mode at low power operation, which can be disabled, forcing the converter to operate at a fixed switching frequency. The converter also can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. 

Smallest Solution Size

The TPS63000, which comes in a tiny 3 mm x 3 mm, 10-pin QFN PowerPADTM package, operates in a fixed frequency of 1.5 MHz that allows a portable designer to implement a 2.2 µH inductor. TI also plans to introduce future buck-boost converters in the TPS63000 family in ultra-small chip scale packages. 

Pricing and Availability

The TPS63000 is available in volume production from TI and its authorized distributors. Suggested retail pricing is $2.75 in 1,000 piece quantities. Evaluation modules of the TPS63000, application notes and TI's new Q2 Power Management Selection Guide are available at www.ti.com/tps63000-pr