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TI Unveils 3-MHz DC/DC Converter Compatible with SmartReflex™ Technology for Li-Ion-Powered Electronics

800-mA Step-Down Circuit with I2C Interface in Tiny Chip Scale Package Enables Dynamic Voltage Scaling, Extends Battery Life

May 1, 2006

DALLAS (May 1, 2006) - Texas Instruments Incorporated (TI) (NYSE: TXN) introduced today a tiny, high-performance power conversion integrated circuit (IC) to work in tandem with processing platforms that use TI's SmartReflexTM power and performance management technologies. Designed to extend battery life in 3G phones and other portable electronics, the flexible converter features a 3.4-Mbps I2C communications interface and ultra-fast transient response from a tiny chip scale package. See: www.ti.com/sc06098.

TI's TPS62350 synchronous, step-down DC/DC converter supports up to 800-mA over the input voltage range of a single-cell Lithium-Ion (Li-Ion) battery. The device's integrated I2C communications interface allows it to adjust output voltage between 0.75 V and 1.53 V, efficiently supporting TI's advanced digital signal processors (DSPs), SmartReflex technologies-enabled OMAP processors like TI's OMAP3430 processor, and other processor core power supplies in cell phones, PDAs, digital still cameras.  It also supports handheld computers that use Intel's XScale® processors. The TPS62350 can operate in a power-save mode at light-load currents, and can be placed in a shutdown mode where the power consumption is reduced to less than 1 uA. 
The device's serial interface is compatible with fast/standard and high-speed mode I2C specification, which allows data transfer at up to 3.4 Mbps. The dynamic voltage scaling feature allows the TPS62350 to adjust voltage levels in 12.5-mV steps and seamlessly switch to an efficiency-optimized light power factor mode (PFM), a transient-optimized fast PFM mode or a forced PFM mode.

First SmartReflex DC/DC Companion Chip

The TPS62350 is optimized for today's smart phones with SmartReflex power and performance technologies. SmartReflex solutions, which leverage TI's deep sub-micron process geometries, significantly reduce chip-level leakage power dissipation. The technologies incorporate a broad range of intelligent and adaptive hardware and software technologies that dynamically control voltage, frequency and power based on device activity, modes of operation, and process and temperature variation.

SmartReflex technologies coordinate the power consumption and performance of all major system components, including multiple processing cores, hardware accelerators, functional blocks and peripherals. A library of power management cells enables a granular approach to system partitioning of the portable device's power domains. Finally, SmartReflex technologies provide an open software framework that enables intelligent coordination among lower-level hardware technologies and compatibility with OS-based and third-party power management software. For more information, see: 


Smallest Solution Size

The TPS62350's chip scale package and 3-MHz fixed frequency allows a portable designer to implement low-cost inductors and capacitors, which results in a complete power conversion solution that saves extremely valuable board space.

Key Features of the TPS62350:

  • 88 Percent Efficiency at 3-MHz Operation 
  • 800-mA Output Current at 2.7 Input Voltage 
  • Excellent Load and Line Transient 
  • Two Percent PWM DC Voltage Accuracy 
  • 35-ns Minimum On-Time 
  • 28-uA Typical Quiescent Current 
  • I2C Compatible Interface up to 3.4 Mbps 
  • Pin-Selectable Output Voltage

Available Today

The TPS62350 is sampling now from TI and its authorized distributors. Volume production is scheduled for June. The converter comes in a 12-pin, 2.2 mm x 1.4 mm chip scale package and a 10-pin, 3 mm x 3 mm QFN package. Suggested retail pricing is $2.05 in 1,000 piece quantities. Evaluation modules of the TPS62350, application notes and TI's comprehensive portfolio of power management ICs are available through power.ti.com.