LP2996A 1.5A DDR termination regulator with shutdown pin for DDR2/3/3L | TI.com

LP2996A
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1.5A DDR termination regulator with shutdown pin for DDR2/3/3L

1.5A DDR termination regulator with shutdown pin for DDR2/3/3L - LP2996A
Datasheet
 

Description

The LP2996A linear regulator is designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The device also supports DDR2, DDR3 and DDR3L VTT bus termination with VDDQ min of 1.35V. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5A continuous current and transient peaks up to 3A in the application as required for DDR-SDRAM termination. The LP2996A also incorporates 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 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 will remain active. A power savings advantage can be obtained in this mode through lower quiescent current.

Features

  • 1.35V Minimum VDDQ
  • 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
  • LP2998/8Q recommended for
    –40°C to 125°C

WEBENCH® Designer LP2996A

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)
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)    
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)    
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)    
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     -40 to 85     VSON | 10     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS51206 Order now DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
      2     0.17     VREF
VTT    
1     3.5     S3/S5 Support     Catalog     -40 to 105     WSON | 10     10WSON: 4 mm2: 2 x 2 (WSON | 10)    
TPS54116-Q1 Order now DDR
DDR2
DDR3
DDR3L
DDR4    
Current Mode     4     1     0.65     VDDQ
VREF
VTT    
2.95     6     Complete Solution
Power Good
Shutdown Pin for S3    
Automotive     -40 to 125     WQFN | 24     24WQFN: 16 mm2: 4 x 4 (WQFN | 24)