Date: 04/10/2009

200-mA LDOs with auto low-power mode from TI for noise sensitive apps

Texas Instruments has introduced the TPS727xx, a new family of 200-mA LDOs that 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). These LDOs are suitable for noise sensitive applications such as smart phones, MP3 players, RF modules, remote controls, ZigBee network systems and handheld consumer devices.

The key features and benefits of the TPS727xx family are,

Low noise 32uVRMS and high PSRR 70dB at 1kHz helps increase battery runtime without sacrificing noise
Enables use of 1.0 uF ceramic capacitors, which allows for a smaller overall solution
Provides low dropout of 130 mV, 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 quick sample and release custom V out versions

The TPS727xx to achieves less than 8 uA without an additional mode pin and automatic 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 the cost by eliminating the need for a general-purpose input/output (GPIO) pin and overhead firmware.

Package:
1.5 x 1.5 mm SON-6 and a 0.8 x 1.22 mm, 0.4 mm pitch, 4-ball wafer chip-scale (WCSP) package
Price: Each $0.48 for 1k pieces
Availability: Now

For more details visit www.ti.com