LP2997MRX Equivalent & Substitute Parts

Part Overview

The LP2997MRX is a DDR-II Terminator PMIC manufactured by Texas Instruments, designed for power management applications requiring DDR-II termination regulation. This component operates across a 2.2V to 5.5V supply voltage range with a maximum supply current of 320µA and supports operating temperatures from 0°C to 125°C.

The LP2997MRX is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing DDR-II termination functionality.

Substiute Parts

LP2997MRX

Texas InstrumentsIn Stock: 8639LP2997MRX Datasheet

Current PartRFQ

LP2997MRX/NOPB

Texas InstrumentsIn Stock: 27623LP2997MRX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP2997MRX is determined by the following critical parameters:

• Functional Application: DDR-II Terminator PMIC
• Electrical Specifications: Voltage supply range 2.2V ~ 5.5V; supply current 320µA maximum
• Package Compatibility: 8-PowerSOIC (0.154", 3.90mm Width) surface mount package
• Thermal Performance: Operating temperature range 0°C ~ 125°C
• Base Product Number: LP2997

The LP2997MRX/NOPB qualifies as a direct substitute based on identical electrical ratings, package specifications, and functional application. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LP2997MRX/NOPB is the direct substitute for the LP2997MRX. Both parts share identical electrical specifications, package geometry, and functional application for DDR-II termination.

The LP2997MRX/NOPB offers the following advantages:

• Active Product Status: Ensures ongoing availability and manufacturing support from Texas Instruments
• ROHS3 Compliance: Meets current regulatory requirements for lead-free and restricted substance compliance
• Increased Inventory: 27,600 units available versus 8,620 units for the obsolete variant

The LP2997MRX/NOPB maintains full electrical and mechanical compatibility with the original LP2997MRX, supporting direct substitution in DDR-II termination applications without design modification.

Frequently Asked Questions (FAQ)

Q: Can the LP2997MRX/NOPB replace the LP2997MRX in existing designs?

A: Yes. The LP2997MRX/NOPB is electrically and mechanically identical to the LP2997MRX. Both components operate at 2.2V to 5.5V supply voltage, deliver 320µA maximum supply current, and use the 8-PowerSOIC package. Direct substitution is supported without circuit modification.

Q: What is the difference between LP2997MRX and LP2997MRX/NOPB?

A: The LP2997MRX/NOPB designation indicates ROHS3 compliance and active product status. The original LP2997MRX is obsolete and RoHS non-compliant. Electrical and functional specifications are identical.

Q: Are there package compatibility concerns when substituting these parts?

A: No. Both the LP2997MRX and LP2997MRX/NOPB use the 8-PowerSOIC (0.154", 3.90mm Width) surface mount package. PCB footprints and assembly processes remain unchanged.

Q: What is the Moisture Sensitivity Level (MSL) for these components?

A: Both parts carry MSL 3 (168 Hours), indicating identical moisture handling and storage requirements. Standard moisture control procedures during assembly and storage apply to both variants.

Q: Why is the LP2997MRX marked as obsolete?

A: The LP2997MRX is no longer in active production. The LP2997MRX/NOPB represents the current active variant with updated compliance certifications. Transition to the LP2997MRX/NOPB is recommended for new designs and ongoing production.