Datasheet Texas Instruments TPS73428DRVT — Datenblatt

TPS734xx
www.ti.com . SBVS089F – DECEMBER 2007 – REVISED FEBRUARY 2009 250mA, Low Quiescent Current, Ultra-Low Noise, High PSRR
Low-Dropout Linear Regulator
FEATURES DESCRIPTION 1 250mA Low Dropout Regulator with EN Low IQ: 44ВµA Multiple Output Voltage Versions Available:
– Fixed Outputs of 1.0V to 4.3V Using
Innovative Factory EEPROM Programming
– Adjustable Outputs from 1.25V to 6.2V High PSRR: 60dB at 1kHz Ultra-low Noise: 28µVRMS Fast Start-Up Time: 45µs Stable with a Low-ESR, 2.0µF Typical Output
Capacitance Excellent Load/Line Transient Response 2% Overall Accuracy (Load/Line/Temp) Very Low Dropout: 125mV at 250mA ThinSOT-23, 2mm Г— 2mm SON-6, and 3mm x
3mm SON-8 Packages The TPS734xx family of low-dropout (LDO),
low-power linear regulators offers excellent ac
performance with very low ground current. High
power-supply rejection ratio (PSRR), low noise, fast
start-up, and excellent line and load transient
response are provided while consuming a very low
44ВµA (typical) ground current. The TPS734xx is
stable with ceramic capacitors and uses an advanced
BiCMOS fabrication process to yield a typical dropout
voltage of 125mV at 250mA output. The TPS734xx
uses a precision voltage reference and feedback loop
to achieve overall accuracy of 2% over all load, line,
process, and temperature variations. It is fully
specified from TJ = –40°C to +125°C and is offered in
low-profile ThinSOT-23, 2mm Г— 2mm SON, and 3mm …