LP2996MRX DDR Terminator PMIC Equivalent & Substitute Parts

Part Overview

The LP2996MRX is a DDR Terminator PMIC manufactured by Texas Instruments, designed for DDR voltage regulation applications. This component operates within 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 part is currently classified as Obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

LP2996MRX

Texas InstrumentsIn Stock: 16467LP2996MRX Datasheet

Current PartRFQ

LP2996MRX/NOPB

Texas InstrumentsIn Stock: 35239LP2996MRX/NOPB Datasheet

DirectRFQ

NCP51198PDR2G

onsemiIn Stock: 3885NCP51198PDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the LP2996MRX are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Voltage supply range compatibility (2.2V ~ 5.5V minimum requirement)
• Package mechanical compatibility (8-pin SOIC or PowerSOIC variants with 0.154" width, 3.90mm)
• Surface mount technology
• DDR termination or LDO regulation functionality
• RoHS3 compliance and MSL 3 rating

Substitute Categories:

1. Direct Packaging Equivalent (Tape & Reel variant): LP2996MRX/NOPB maintains identical electrical specifications and package dimensions, differing only in packaging format from Cut Tape to Tape & Reel.

2. Cross-Manufacturer Alternative: NCP51198PDR2G from onsemi provides LDO DDR voltage regulation in an 8-SOIC package with compatible voltage supply range and thermal specifications, though with extended lower operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

LP2996MRX/NOPB (Preferred Direct Substitute): This part maintains full electrical and mechanical compatibility with the original LP2996MRX. The only distinction is packaging format: Tape & Reel versus Cut Tape. Product status is Active, ensuring continued availability and manufacturing support. This substitute is recommended for direct replacement in existing designs without circuit modification.

NCP51198PDR2G (Cross-Manufacturer Alternative): This onsemi component provides DDR LDO regulation within compatible voltage and thermal parameters. The 8-SOIC package shares identical pitch and width specifications with the original part. However, this part carries Obsolete status, limiting its long-term availability. The extended operating temperature range (-40°C to 125°C) provides broader environmental capability than the original specification. This substitute is suitable for applications where cross-manufacturer sourcing is acceptable and long-term availability concerns are mitigated through inventory planning.

Frequently Asked Questions (FAQ)

Q: Can LP2996MRX/NOPB be used as a direct replacement for LP2996MRX? A: Yes. Both parts are identical in electrical specifications, voltage supply range (2.2V ~ 5.5V), current rating (320µA), operating temperature range (0°C ~ 125°C), and package dimensions (8-PowerSOIC, 0.154" width, 3.90mm). The difference is packaging format only: LP2996MRX/NOPB is supplied in Tape & Reel format while LP2996MRX is Cut Tape. No circuit modifications are required.

Q: What are the package compatibility considerations between LP2996MRX and NCP51198PDR2G? A: Both components use 8-pin SOIC packages with identical pitch and width (0.154", 3.90mm). The LP2996MRX uses PowerSOIC variant while NCP51198PDR2G uses standard SOIC. Physical footprint compatibility is maintained for PCB assembly. Pin configuration must be verified against specific application requirements before substitution.

Q: Why is the LP2996MRX classified as Obsolete? A: The Obsolete status indicates the part is no longer in active production by Texas Instruments. LP2996MRX/NOPB, the Tape & Reel variant, maintains Active status and serves as the recommended path for continued sourcing and new designs.

Q: Are all substitute parts RoHS3 compliant? A: Yes. LP2996MRX/NOPB and NCP51198PDR2G are both ROHS3 Compliant with MSL 3 rating (168 Hours), matching the original part's environmental and regulatory compliance profile.

Q: What is the supply current specification for NCP51198PDR2G? A: The supply current specification for NCP51198PDR2G is not provided in the available technical parameters. Verification against the component datasheet is necessary for applications with strict current budget requirements.