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TI rolls LDOs in chip scale package

Posted: 29 Jun 2005 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ti? low-dropout regulator? ldo regulator? chip scale package?

Texas Instruments Inc. (TI) announced a series of 200mA low-dropout linear regulators (LDOs) in a 1.5-by-1mm chip scale package, which is said to be 80 percent smaller than today's SOT-23 devices.

The new TPS799xx LDOs deliver 29.6?V(RMS) of output noise and provide a power supply rejection ratio (PSRR) of 66dB at 1kHz to minimize noise that occurs when power is regulated to a handset's most noise-sensitive circuits. These devices also offer a start-up time of 45?s and excellent transient response while consuming 40?A (typ) of supply current.

According to TI, its tiny, low-noise LDOs meet the stringent power management requirements of 3G handsets that feature noise-sensitive Bluetooth, RF and high-resolution camera circuitry, including advanced smart camera phones based on its OMAP processors.

The TPS799xx family is stable with a small, 2.2?F ceramic capacitor and can yield dropout voltages as low as 100mV at 200mA over the entire range of input voltages, allowing it to support demanding power requirements of 3G handsets and WLAN cards. In addition, TI said, 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.

In addition to the TPS799xx, TI released its TPS793xx family of 200mA RF LDOs in chip scale package that are Pb-free and lightweight, and plans a July release of the TPS711xx family of dual, 250mA RF LDOs.

The TPS799xx family of LDOs is already available in volume orders from TI and its authorized distributors. These devices are housed in a highly reliable, five-pin wafer chip scale (1.5-by-1mm) package and a five-pin TSOT23 package. All TPS799xx devices are priced at 35 cents each in quantities of 1,000 units. Evaluation modules, design application notes and an easy-to-use online power management selection tool are available at TI's

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