LP2998MRE/NOPB Part Information
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.
- 1.35 V Minimum VDDQ
- AEC-Q100 Test Guidance with the following results (SO PowerPAD-8): u2013 Device HBM ESD Classification Level H1C u2013 Junction Temperature Range u201340u00b0C to 125u00b0C
- Linear Topology
- Low External Component Count
- Low Output Voltage Offset
- No External Resistors Required
- Source and Sink Current
- Suspend to Ram (STR) Functionality
- Thermal Shutdown
|Memory Supported||DDR1 DDR2 DDR3 LPDDR3|
|Source / Sink Current||1.5A|
|Supply Voltage Min||2.2V|
|Supply Voltage Max||5.5V|
|DDR Regulator Case Style||SO PowerPAD|
|No. of Pins||8Pins|
|MSL||MSL 3 - 168 hours|
|SVHC||No SVHC (27-Jun-2018)|
|Adjustable Output Voltage Max||1.39V|
|Adjustable Output Voltage Min||1.12V|
|Input Voltage Max||5.5V|
|Input Voltage Min||2.2V|
|Linear Regulator Case Style||HSOIC|
|Operating Temperature Max||125°C|
|Operating Temperature Min||-40°C|
|Output Voltage Max||1.39V|
|Output Voltage Min||1.12V|
Alternative Part Descriptions
- 1.5-A DDR termination regulator with shutdown pin | Texas Instruments
Frequently Asked Questions
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