Texas Instruments TPS79330YEQR

Description
The TPS793xx family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in NanoStar wafer chip scale and SOT23 packages. NanoStar packaging gives an ultrasmall footprint as well as an ultralow profile and package weight, making it ideal for portable applications such as handsets and PDAs. Each device in the family is stable, with a small 2.2uF ceramic capacitor on the output. The TPS793xx family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 112mV at 200mA, TPS79330). Each device achieves fast start-up times (approximately 50us with a 0.001µF bypass capacitor) while consuming very low quiescent current (170µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1μA. The TPS79328 exhibits approximately 32µVRMS of output voltage noise at 2.8V output with a 0.1uF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high PSRR and low-noise features as well as the fast response time.

Features
200mA RF Low-Dropout Regulator With Enable
Available in Fixed Voltage Versions from 1.8V to 4.75V and Adjustable (1.22V to 5.5V)
High PSRR (70dB at 10kHz)
Ultralow-Noise (32µVRMS, TPS79328)
Fast Start-Up Time (50μs)
Stable With a 2.2uF Ceramic Capacitor
Excellent Load/Line Transient Response
Very Low Dropout Voltage (112mV at 200mA, TPS79330)
5- and 6-Pin SOT23 (DBV) and NanoStar Wafer Chip Scale (YEQ, YZQ) Packages

Applications
RF: VCOs, Receivers, ADCs
Audio
Cellular and Cordless Telephones
Bluetooth®, Wireless LAN
Handheld Organizers, PDAs