TPS79228DBVR Datasheet | Texas Instruments

.ti. Actual Size (3,00 mm x 3,00 mm) TPS79201, TPS79225 Actual Size (3,00 mm x 3,00 mm) TPS79228, TPS79230 SLVS337B - MARCH 2001 - REVISED MAY 2002 ULTRALOW-NOISE, HIGH PSRR, FAST RF 100-m A LOW-DROPOUT LINEAR REGULATORS Features D 100-m A Low-Dropout Regulator With EN D Available in 2.5-V, 2.8-V, 3-V, and Adj. D High PSRR (75 d B at 10 k Hz) D Ultralow Noise (27 µV) D Fast Start-Up Time (50 µs) D Stable With Any 1-µF Ceramic Capacitor D Excellent Load/Line Transient D Very Low Dropout Voltage (55 m V at Full Load, TPS79230) D 5-Pin SOT23 (DBV) Package D TPS791xx Provides EN Options APPLICATIONS D Cellular and Cordless Telephones D VCOs D RF D Bluetooth, Wireless LAN D Handheld Organizers, PDA DESCRIPTION The TPS792xx 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 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 Bi CMOS fabrication process to yield extremely low dropout voltages (e.g., 55 m V at 100 m A, 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 ponents 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. DBV PACKAGE (TOP VIEW) IN 1 5 OUT EN 3 4 BYPASS Fixed Option DBV PACKAGE (TOP VIEW) IN 1 6 OUT EN 3 4 BYPASS Adjustable Option Ripple Rejection - d B Output Spectral Noise Density - µ V/ Hz TPS79228 RIPPLE REJECTION vs...