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
Bangalore (Oct. 4, 2009) – Texas Instruments Incorporated (TI) introduces 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 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 VOUT versions
Find out more about TI’s linear regulator portfolio and selected products for portable applications by visiting the links below:
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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