Texas Instruments announced a series of 200-mA low-dropout linear regulators (LDOs) in a 1.5 mm x 1 mm chip scale package -- 80 percent smaller than SOT-23 devices. The 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 start-up time of 45 microseconds (µs) and excellent transient response while consuming 40 µA (typical) of supply current.  The family is stable with a 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.

Pricing and Availability

The TPS799xx family of LDOs is available today in volume. 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.