LP2951ACDM-3.0R2 Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The LP2951ACDM-3.0R2 is a linear voltage regulator IC manufactured by onsemi, designed for positive fixed 3V output applications with 100mA current capacity in an 8-MSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device provides regulated 3V output from input voltages up to 30V with integrated over-current and over-temperature protection.

Substiute Parts

LP2951ACDM-3.0R2

onsemiIn Stock: 10111LP2951ACDM-3.0R2 Datasheet

Current PartRFQ

LP2951ACDM-3.0R2G

onsemiIn Stock: 1037LP2951ACDM-3.0R2G Datasheet

DirectRFQ

LP2951ACDM-3.0RG

onsemiIn Stock: 4937LP2951ACDM-3.0RG Datasheet

Parametric EquivalentRFQ

LP2951ACMM-3.0/NOPB

Texas InstrumentsIn Stock: 3169LP2951ACMM-3.0/NOPB Datasheet

SimilarRFQ

LP2951ACMMX-3.0/NOPB

Texas InstrumentsIn Stock: 4630LP2951ACMMX-3.0/NOPB Datasheet

SimilarRFQ

LP2951CMM-3.0/NOPB

Texas InstrumentsIn Stock: 11276LP2951CMM-3.0/NOPB Datasheet

SimilarRFQ

LP2951CMMX-3.0/NOPB

Texas InstrumentsIn Stock: 7160LP2951CMMX-3.0/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2951ACDM-3.0R2 is determined by the following critical parameters:

• Output voltage fixed at 3V
• Maximum input voltage of 30V
• Output current capacity of 100mA
• Voltage dropout specification of 0.45V @ 100mA
• Quiescent current of 120 µA
• Operating temperature range of -40°C to 125°C
• 8-MSOP package configuration
• Surface mount mounting type
• Over-current and over-temperature protection

Substitute parts are grouped into two categories: direct manufacturer equivalents from onsemi with identical electrical specifications, and parametric equivalents from Texas Instruments that meet the same functional requirements within the allowed parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

The LP2951ACDM-3.0R2 is obsolete and requires substitution. Selection among available alternatives depends on compliance and product status requirements:

Primary Recommendation - onsemi Direct Equivalents: LP2951ACDM-3.0R2G and LP2951ACDM-3.0RG are active onsemi products with identical electrical specifications to the original part. Both are ROHS3 compliant and maintain the same voltage dropout, quiescent current, and protection features. LP2951ACDM-3.0RG is available in Tape & Reel packaging with higher inventory (4,864 units), while LP2951ACDM-3.0R2G includes Enable control features and automotive qualification (AEC-Q100).

Secondary Recommendation - Texas Instruments Parametric Equivalents: LP2951ACMM-3.0/NOPB, LP2951ACMMX-3.0/NOPB, LP2951CMM-3.0/NOPB, and LP2951CMMX-3.0/NOPB are Texas Instruments parts with adjustable output type capability configured for 3V fixed output. These parts feature 0.6V maximum voltage dropout (compared to 0.45V for onsemi), Enable control features, and enhanced protection including short-circuit protection. All are ROHS3 compliant and active products.

All substitute options maintain the 8-MSOP package, 100mA output current, 120 µA quiescent current, and -40°C to 125°C operating temperature range required for functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can LP2951ACDM-3.0R2G directly replace LP2951ACDM-3.0R2?

A: Yes. LP2951ACDM-3.0R2G is an active onsemi product with identical electrical specifications including 3V fixed output, 100mA current capacity, 0.45V dropout, and 8-MSOP package. The primary differences are active product status and ROHS3 compliance. The addition of Enable control features and AEC-Q100 automotive qualification provide enhanced functionality without affecting baseline operation.

Q: What is the difference between onsemi and Texas Instruments substitutes?

A: onsemi substitutes (LP2951ACDM-3.0R2G, LP2951ACDM-3.0RG) maintain identical electrical specifications including 0.45V maximum dropout. Texas Instruments substitutes (LP2951ACMM-3.0/NOPB series) feature 0.6V maximum dropout and adjustable output type capability, though configured for 3V fixed output. Both meet the core functional requirements and share the same package and current ratings.

Q: Are the Texas Instruments parts compatible with the original design?

A: Texas Instruments LP2951 variants are parametrically equivalent within the allowed electrical specifications. The 0.15V higher dropout (0.6V vs 0.45V) and adjustable output type do not prevent functional substitution in applications designed for the original part. All variants maintain 100mA output current, 120 µA quiescent current, and 8-MSOP package compatibility.

Q: What packaging options are available?

A: LP2951ACDM-3.0R2 was supplied in bulk packaging. Active substitutes are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging. LP2951ACDM-3.0RG offers the highest inventory (4,864 units) in Tape & Reel format. Texas Instruments variants are available in Tape & Reel and Cut Tape packaging with varying inventory levels.

Q: Are all substitutes RoHS compliant?

A: The original LP2951ACDM-3.0R2 is RoHS non-compliant. All active substitute parts (onsemi and Texas Instruments variants) are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: Does the Enable control feature affect compatibility?

A: LP2951ACDM-3.0R2G includes Enable control features not present in the original part. This feature is additive and does not prevent direct substitution. Designs not utilizing the Enable function operate identically to the original part.