Datasheet Texas Instruments LP2997MR — Ficha de datos

LP2997
www.ti.com SNVS295F – MAY 2004 – REVISED APRIL 2013 LP2997 DDR-II Termination Regulator
Check for Samples: LP2997 FEATURES DESCRIPTION The LP2997 linear regulator is designed to meet the
JEDEC SSTL-18 specifications for termination of
DDR-II memory. The device contains a high-speed
operational amplifier to provide excellent response to
load transients. The output stage prevents shoot
through while delivering 500mA continuous current
and transient peaks up to 900mA in the application as
required for DDR-II SDRAM termination. The LP2997
also incorporates a VSENSE pin to provide superior
load regulation and a VREF output as a reference for
the chipset and DIMMs. 1 2 Source and Sink Current
Low Output Voltage Offset
No External Resistors Required
Linear Topology
Suspend to Ram (STR) Functionality
Low External Component Count
Thermal Shutdown
Available in SOIC-8, SO PowerPAD-8 Packages APPLICATIONS An additional feature found on the LP2997 is an
active low shutdown (SD) pin that provides Suspend
To RAM (STR) functionality. When SD is pulled low
the VTT output will tri-state providing a high …