TPS79633DCQR

Description
The TPS796 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 small outline, 3 x 3 VSON, SOT223-6, and TO-263 packages. Each device in the family is stable with a small, 1-μF ceramic capacitor on the output.
The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 250 mV at 1 A). Each device achieves fast start-up times (approximately 50 μs with a 0.001-μF bypass capacitor) while consuming very low quiescent current (265 μA typical). Moreover, when the device is placed in standby mode， the supply current is reduced to less than 1 μA.
The TPS79630 exhibits approximately 40 uVRMS of output voltage noise at 3.0-V output, with a 0.1-μF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR, low noise features, and need fast response time.  
Features ●1-A Low-Dropout Regulator With Enable●Available in Fixed and Adjustable (1.2V to 5.5 V) Versions●High PSRR (53 dB at 10 kHz)●Ultralow-Noise (40 μVRMs, TPS79630)●Fast Start-Up Time (50 μs)●Stable With a 1-μF Ceramic CapacitorExcellent Load and Line Transient Response●Very Low Dropout Voltage (250 mV at Full Load, TPS79630)●3 x 3 VSON PowerPADTM, SOT223-6, and TO-263 Packages   Applications ●RF: VCOs, Receivers, ADCs●Audio●Bluetooth, Wireless LAN●Cellular and Cordless Telephones●Handheld Organizers, PDAs