Datasheet Texas Instruments TPS71918-28DRVR — 数据表

TPS718xx
TPS719xx
www.ti.com. SBVS088C – FEBRUARY 2007 – REVISED MAY 2008 Dual, 200mA Output, Low Noise, High PSRR
Low-Dropout Linear Regulators
FEATURES DESCRIPTION Dual, 200mA High-Performance LDOs Low Total Quiescent Current: 90ВµA with Both
LDOs Enabled Low Noise: 70ВµVRMS/V Active Output Pulldown (TPS719xx) Independent Enables for Each LDO PSRR: 65dB at 1kHz, 45dB at 1MHz Available in Multiple Fixed-Output Voltage
Combinations from 0.9V to 3.6V Using
Innovative Factory EEPROM Programming Fast Start-Up Time: 160Вµs Over-Current, Over-Temperature and
Under-Voltage Protection Low Dropout: 230mV at 200mA Stable with 1ВµF Ceramic Output Capacitor Available in 2mm Г— 2mm SON-6 and 6-Ball
WCSP Packages The TPS718xx and TPS719xx families of low-dropout
(LDO) regulators offer a high power-supply rejection
ratio (PSRR), low noise, fast start-up, and excellent
line and load transient responses while consuming a
very low 90ВµA (typical) at no load ground current with
both LDOs enabled. The TPS719xx also provides an
active pulldown circuit to quickly discharge output
loads. The TPS718xx and TPS719xx are stable with
ceramic capacitors and use an advanced BiCMOS
fabrication process to yield a typical dropout voltage
of 230mV at 200mA output loads. The TPS718xx and
TPS719xx also use a precision voltage reference and
feedback loop to achieve 3% overall accuracy over all
load, line, process, and temperature variations. Both …