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TI linear regulator aimed at MSP430-based applications

150-mA, dual-level output LDOs with 500-nA quiescent current

Mar 3, 2008

DALLAS (March 3, 2008) - Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced 150-mA, low-dropout linear regulators (LDOs) with dual-level voltage output for MSP430 microcontroller-based, battery-powered devices. Consuming the lowest quiescent current in the industry at 500-nanoAmps, the LDO's voltage select (VSET) pin gives designers the ability to switch between two voltage levels to customize and reduce power consumption during operation. See: www.ti.com/tps780xx-pr.

TI's new ultra-low power TPS780xx LDOs with selectable dual-level output voltages allow designers to dynamically shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode. The two voltage levels are preset at the factory by applying a unique architecture using EPROM, which provides multiple output voltage options.
The LDO requires no external parts to implement the device's dynamic voltage scaling (DVS) feature for a 16-bit MSP430 or other microcontroller design. The TPS780xx is stable with any output capacitor greater than 1uF. The devices come in a 6-pin, 2 mm x 2 mm, SON package, which is targeted at portable applications, such as mobile handsets, digital still cameras and MSP430 microcontroller-based applications that require low power, while maintaining a small footprint.

Key features of the TPS780xx family:

  • 150-mA low dropout regulator with pin-selectable dual level output
  • Low dropout: 250-mV (typical) at 150-mA
  • 3-percent typical accuracy over load/line/temperature
  • Low total quiescent current: 500-nA
  • Adjustable or fixed output voltages ranging from 1.22 V to 5.25 V. Fixed output voltages easily modified using factory EPROM programming.
  • VSET pin toggles between two factory preset voltage levels
  • Thermal shutdown and overcurrent protection

Pricing and availability

The TPS780xx family of LDOs are sampling today. Volume production is expected in March. Suggested retail pricing in 1,000-piece quantities is $0.75. Other LDOs supporting MSP430 microcontrollers include the TPS781xx with a 1-uA quiescent current, TPS797xx and TPS715xx regulators. For a full range of LDOs, see power.ti.com.

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