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See Technical Specifications

LP2997MR/NOPB

DDR-II Termination Regulator

Manufacturer:

TI
Mfr.Part #:

LP2997MR/NOPB
Datasheet:

LP2997MR/NOPB Datasheet (PDF)
Vin (min) (V):

1.8
Vin (max) (V):

5.5
Rating:

Catalog
Iq (typ) (mA):

0.32
EDA/CAD Models:

Request Free CAD Models for LP2997MR/NOPB

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LP2997MR/NOPB General 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 V_SENSE pin to provide superior load regulation and a V_REF output as a reference for the chipset and DIMMs.

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 V_TT output will tri-state providing a high impedance output, but, V_REF will remain active. A power savings advantage can be obtained in this mode through lower quiescent current.

Key Features

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

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Specifications

Vin (min) (V)	1.8	Vin (max) (V)	5.5
Rating	Catalog	Iq (typ) (mA)	0.32
Features	Shutdown Pin for S3	Operating temperature range (°C)	0 to 125