TPS79230DBVTG4  Description

The TPS792xx family of low-dropout (LDO) low-power linear voltage regulators features a high power supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline, SOT23, package. 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 (e.g., 55 mV at 100 mA, TPS79230). Each device achieves fast start-up times (approximately 50 μs with a 0.001 μF bypass capacitor) while consuming very low quiescent current (170 μA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 μA. The TPS79228 exhibits approximately 27 μVRMS of output voltage noise 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 and low noise features as well as the fast response time.

TPS79230DBVTG4  Features

100-mA Low-Dropout Regulator With EN

Available in 2.5-V, 2.8-V, 3-V, and Adj.

High PSRR (75 dB at 10 kHz)

Ultralow Noise (27 μV)

Fast Start-Up Time (50 μs)

Stable With Any 1-μF Ceramic Capacitor

Excellent Load/Line Transient

Very Low Dropout Voltage

(55 mV at Full Load, TPS79230)

5-Pin SOT23 (DBV) Package

TPS791xx Provides EN Options

TPS79230DBVTG4  Applications

Cellular and Cordless Telephones

VCOs

RF

Bluetooth, Wireless LAN

Handheld Organizers, PDA