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Updated: July 8th, 2008 05:26 PM CDT

TI Unveils Integrated Power Management IC for DaVinci(TM) Technology-Based Portable Electronics

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via PRNewswire

DALLAS , Nov. 6 /PRNewswire/ -- Texas Instruments Incorporated (NYSE: TXN)(TI) introduced today the first power management integrated circuit (PMIC)fully optimized to support all power system requirements of a multimediadevice based on DaVinci(TM) technology. Simplifying power design in portablemedia players, digital still cameras and other lithium-battery poweredelectronics, the flexible device provides dynamic voltage scaling and up to95 percent power conversion efficiency. See: http://www.ti.com/sc06194 .

TI's TPS65023 converter manages the power in a TMS320DM644x digital signalprocessor (DSP) based on DaVinci technology with high-performance digitalcontrol and maximum efficiency across the widest possible range of loadcurrents up to 1.5-A. The device, which comes in a small 5 mm x 5 mm QFNpackage, integrates three step-down converters to support the system's corevoltage, peripheral, I/O and memory voltage. The TPS65023 uses an I2Ccommunications interface to implement a dynamic voltage scaling technique thatdigitally adjusts the core output voltage level between 0.8 V and 1.6 V,allowing the system to conserve power. The interface is compatible withfast/standard and high-speed mode I2C specification, which allows datatransfer up to 400-kHz. All three of TPS65023's step-down converters allowsthe device to operate in a power-save mode at light-load currents, and can beplaced in a shutdown mode when power consumption is reduced to less than 1-uA.

The TPS65023 also integrates two general-purpose, 200-mA linear dropout(LDO) voltage regulators that are enabled with an external input pin. EachLDO operates with an input voltage range between 2.5 V and 6.5 V, which allowseach to be supplied from one of the integrated step-down converters ordirectly from the battery.

Integrated Features of the TPS65023: * 1.5-A, 90-percent efficient step-down converter for processor core * 1.2-A, 95-percent efficient step-down converter for system voltage * 1.0-A, 92-percent efficient step-down converter for memory voltage * 30-mA LDO/switch for real time clock * Two 200-mA general-purpose LDOs * Dynamic voltage management for DaVinci processor core * 85-uA typical quiescent current * I2C compatible interface with data transfer up to 400-kHz * Low ripple pulse frequency modulation (PFM) mode * Thermal shutdown protection Power Management Solutions for DaVinci Processors

TI offers the broadest portfolio of innovative power management productsthat support low-power DaVinci processors and other TI DSPs. TI's step-downDC/DC converters range from the TPS62300 and TPS62350 3-MHz devices forsingle-cell lithium battery-powered handheld applications to TI's TPS5430SWIFT(TM) converter for multi-cell batteries. TI's power management productssupport any system based on DaVinci technology, including the low-noiseTPS79901 low-dropout regulator (LDO), bq27200 battery gas gauge, bq24070battery charger and TPS3808 supervisory circuit. For more Power for DaVincitechnology products, see: http://www.ti.com/dsppower .

Available Today

The TPS65023 is available in volume production from TI and its authorizeddistributors. The converter comes in a 40-pin, 5 mm x 5 mm QFN package.Suggested retail pricing is $3.85 in 1,000-piece quantities. Evaluationmodules of the TPS65023, application notes and TI's comprehensive portfolio ofpower management ICs are available through http://power.ti.com .

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