LP2996-N 1.5A DDR termination regulator with shutdown pin for DDR2 | TI.com

LP2996-N
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1.5A DDR termination regulator with shutdown pin for DDR2

 

Recommended alternative parts

  • LP2997  -  DDR-II Linear Termination Regulator
  • LP2998  -  Industrial Temp Range (-40C To 125C) DDR-I And DDR-II Linear Termination Regulator

Description

The LP2996-N and LP2996A linear regulators are designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The device also supports DDR2, while LP2996A supports DDR3 and DDR3L VTT bus termination with VDDQ minimum of 1.35 V. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5-A continuous current and transient peaks up to 3 A in the application as required for DDR-SDRAM termination. The LP2996-N and LP2996A also incorporate a VSENSE pin to provide superior load regulation and a VREF output as a reference for the chipset and DIMMs.

An additional feature found on the LP2996-N and LP2996A 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 impedance output, but VREF remains active. A power savings advantage can be obtained in this mode through lower quiescent current.

TI recommends the LP2998 and LP2998-Q1 devices for automotive applications and DDR applications that require operating at temperatures below zero.

WEBENCH® design tools can be used by application designers to generate, optimize, and simlulate applications using the LP2998 and LP2998-Q1.

Features

  • Minimum VDDQ:
    • 1.8 V (LP2996-N)
    • 1.35 V (LP2996A)
  • Source and Sink Current
  • Low Output Voltage Offset
  • No External Resistors Required for Setting Output Voltage
  • Linear Topology
  • Suspend to Ram (STR) Functionality
  • Stable With Ceramic Capacitors With Appropriate ESR
  • Low External Component Count
  • Thermal Shutdown

WEBENCH® Designer LP2996-N

DDR type
  Range
Ambient Temp  °C 0 to 85°C

Parametrics

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Part number Order DDR memory type Control mode Iout VDDQ (Max) (A) Iout VTT (Max) (A) Iq (Typ) (mA) Output Vin (Min) (V) Vin (Max) (V) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
LP2996-N Order now DDR
DDR2    
      1.5     0.32     VREF
VTT    
1.8     5.5     Shutdown Pin for S3     Catalog     0 to 125     SO PowerPAD | 8
SOIC | 8
WQFN | 16    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
16WQFN: 16 mm2: 4 x 4 (WQFN | 16)    
LP2996A Order now DDR
DDR2
DDR3
DDR3L    
      1.5     0.32     VREF
VTT    
1.35     5.5     Shutdown Pin for S3     Catalog     0 to 125     SO PowerPAD | 8     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
LP2997 Order now DDR2           0.5     0.32     VREF
VTT    
1.8     5.5     Shutdown Pin for S3     Catalog     0 to 125     SO PowerPAD | 8
SOIC | 8    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
LP2998 Order now DDR
DDR2
DDR3
DDR3L    
      1.5     0.32     VREF
VTT    
1.35     5.5     Shutdown Pin for S3     Catalog     -40 to 125     SO PowerPAD | 8
SOIC | 8    
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
LP2998-Q1 Order now DDR
DDR2
DDR3
DDR3L    
      1.5     0.32     VREF
VTT    
1.35     5.5     Shutdown Pin for S3     Automotive     -40 to 125     SO PowerPAD | 8     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS51100 Order now DDR
DDR2
DDR3
DDR3L
LPDDR3    
S3
S5    
  3     0.5     VREF
VTT    
1.2     3.6     S3/S5 Support     Catalog     -40 to 85     HVSSOP | 10     10HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 10)    
TPS51200 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
D-CAP
S3
S4/S5    
  3     0.5     VREF
VTT    
1.1     3.5     S3/S5 Support     Catalog