LP2998 DDR-I、DDR-II 和 DDR-III 终端稳压器 | 德州仪器 TI.com.cn

LP2998
此产品已上市,且可供购买。 可提供某些产品的较新替代品。
DDR-I、DDR-II 和 DDR-III 终端稳压器

DDR-I、DDR-II 和 DDR-III 终端稳压器 - LP2998
数据表
 

描述

The LP2998 linear regulator is designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for termination of DDR-SDRAM and DDR2 memory. The device also supports DDR3 and DDR3L VTT bus termination with VDDQ min 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 LP2998 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 LP2998 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.

特性

  • AEC-Q100 Test Guidance with the following results
    (SO PowerPAD-8):
    • Device HBM ESD Classification Level H1C
    • Junction Temperature Range –40°C to 125°C
  • 1.35 V 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

WEBENCH® Designer LP2998

DDR type
  Range
Ambient Temp  °C -40 to 125°C

参数

与其它产品相比 DDR内存 邮件 下载到电子表格中
Part number 立即下单 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)
LP2998 立即下单 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)    
LP2996-N 立即下单 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 立即下单 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 立即下单 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)    
TPS51200 立即下单 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 立即下单 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 立即下单 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)