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Texas Instruments introduces 200-mA linear regulators with auto low-power mode

LDOs achieve 8-uA quiescent current to increase battery runtime without sacrificing noise performance

PRNewswire
Oct 1, 2009

DALLAS, Oct. 1 /PRNewswire/ -- Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced a family of 200-mA, low dropout regulators (LDOs), which offer an auto low-power mode that combines ultra-low quiescent current of less than 8 uA with fast transient response of +/-50 mV while maintaining low noise and a high power supply rejection ratio (PSRR). With 70 percent lower quiescent current than existing solutions, the new LDOs help increase battery runtime without sacrificing performance in noise-sensitive applications, such as smart phones, MP3 players, RF modules, remote controls, ZigBee® network systems and handheld consumer devices. For product details see: www.ti.com/tps727-pr.

Typical high-performance LDOs require the load quiescent current to be 25 uA or less. Auto low-power mode allows the TPS727xx to achieve less than 8 uA without an additional mode pin and automatically switches to and from low power depending on load current. In addition, the use of auto low-power mode eliminates the need to modify software drivers to control the mode pin, which speeds and simplifies the design process. It also reduces cost by eliminating the need for a general purpose input/output (GPIO) pin and overhead firmware.

Key features and benefits

  • Low-power operation with innovative auto low-power mode, ultra-low quiescent current of 8 uA, fast transient response +/-50mV for 200mA, low noise 32uVRMS and high PSRR 70dB at 1kHz helps increase battery runtime without sacrificing noise
  • Enables use of small 1.0 uF ceramic capacitors, which allows for a smaller overall solution
  • Provides low dropout of 130 mV, plus stable and accurate output voltage range of 0.9-5 V, which increases system reliability
  • Factory EEPROM programming of the output voltage provides the flexibility to quickly sample and release custom V out versions

Find out more about TI's linear regulator portfolio and selected products for portable applications by visiting the links below:

Availability and pricing

The TPS727xx is available now in a 1.5 x 1.5 mm SON-6 package and a 0.8 x 1.22 mm, 0.4 mm pitch, 4-ball wafer chip-scale (WCSP) package. It is priced at $0.48 in quantities of 1,000.

About Texas Instruments

Texas Instruments (NYSE: TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through manufacturing, design and sales operations in more than 30 countries. For more information, go to www.ti.com.

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SOURCE Texas Instruments Incorporated

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SOURCE: Texas Instruments Incorporated

Web site: http://www.ti.com/