TI´s new TPS799xx LDOs deliver 29.6 µV(RMS) of output noise and provide a power supply rejection ratio (PSRR) of 66 dB at 1 kHz to minimize noise that occurs when power is regulated to a handset´s most noise-sensitive circuits. The devices also offer a fast start-up time of 45 microseconds (µs) and excellent transient response while consuming only 40 µA (typical) of supply current. 

The TPS799xx family is stable with a small, 2.2 µF ceramic capacitor and can yield dropout voltages as low as 100-mV at 200-mA over the entire range of input voltages, allowing it to support demanding power requirements of 3G handsets and WLAN cards. In addition, the highly accurate devices use a precision voltage reference and feedback loop to achieve overall accuracy of two percent over load, line and temperature variations. 

Expanding LDO Portfolio in Chip Scale

Responding to growing customer demand for LDOs in chip scale packaging, TI uses its advanced analog manufacturing process technology to offer devices in chip scale that are Pb-free and Green, lightweight and extremely small. In addition to the TPS799xx LDOs, TI has released its popular TPS793xx family of 200-mA RF LDOs in chip scale (www.ti.com/sc05131a), and plans a July release of the TPS711xx family of dual, 250-mA RF LDOs (www.ti.com/sc05131b). Also available in chip scale is the industry´s smallest DC/DC converter for 500-mA, the TPS62300 (www.ti.com/sc04161). 

Pricing and Availability

The TPS799xx family of LDOs is available today in volume from TI and its authorized distributors. The devices come in a highly reliable, five-pin wafer chip scale (1.5 mm x 1 mm) package and a five-pin TSOT23 package. All TPS799xx devices are priced at $0.35 each in quantities of 1,000 units. Evaluation modules, design application notes and an easy-to-use online power management selection tool are available through power.ti.com.

Leading Portfolio of Power Management IC Technology

TI is focused on meeting the power design needs of customers through innovative products and technical support. TI leverages its analog and digital system expertise and manufacturing capabilities to provide high-performance, discrete and integrated power management solutions to fit any portable, line-powered, isolated or non-isolated power design challenge - from cell phones and PDAs to telecom, industrial and computing applications.