TPS71334 Datasheet | Texas Instruments

URES - Dual 250 m A High-Performance RF LDOs - Integrated Supply Voltage Supervisor Monitors VOUT2 - Available in Fixed and Adjustable Voltage Options (1.2 V to 5.5 V) - High PSRR: 65 d B at 10 k Hz - Ultra Low Noise: 32 µVrms - Fast Start-Up Time: 60 µs - Stable with 2.2 µF Ceramic Capacitor - Excellent Load/Line Transient Response - Very Low Dropout Voltage: 125 m V at 250 m A - Independent Enable Pins - Thermal Shutdown and Independent Current Limit - Available in Thermally-Enhanced SON Package: 3mm x 3mm x 1mm APPLICATIONS - Cellular and Cordless Phones - Wireless PDA/Handheld Products - PCMCIA/Wireless LAN Applications - Digital Camera/Camcorder/Internet Audio - DSP/FPGA/ASIC/Controllers and Processors DRC PACKAGE 3mm x 3mm SON (TOP VIEW) IN 1 RESET 2 OUT1 3 OUT2 4 GND 5 10 EN1 9 NC 8 EN2 7 FB2/NC 6 NR PSRR (d B) DESCRIPTION The TPS713xx family of low-dropout (LDO) voltage regulators is tailored to noise-sensitive and RF applications. These products feature dual 250 m A LDOs with ultralow noise, high power-supply rejection ratio (PSRR), and fast transient and start-up response. These devices also feature an integrated supply voltage supervisor (SVS) that monitors the voltage at OUT2 and will assert if the voltage falls to 95% (typical) of the measured output. Each regulator output is stable with low-cost 2.2 µF ceramic output capacitors and Features very low dropout voltages (125 m V typical at 250 m A). Each regulator achieves fast start-up times (approximately 60 µs with a 0.001 µF bypass capacitor) while consuming very low quiescent current (300 µA typical with both outputs enabled). When the device is placed in standby mode, the supply current is reduced to less than 0.3 µA typical. Each regulator exhibits approximately 32 µVrms of output voltage noise with VOUT = 2.8 V and a 0.01 µF noise reduction (NR) capacitor. Applications with analog ponents that are noise-sensitive, such as portable RF electronics, will benefit from high PSRR, low noise, and fast line...