LP2951-02YM-TR Equivalent & Substitute Parts

Part Overview

The LP2951-02YM-TR is a linear voltage regulator IC from Microchip Technology, classified as a positive adjustable (fixed) output Power Management IC (PMIC). This 100mA regulator operates across an input voltage range of up to 30V and delivers adjustable output from 1.24V to 29V. The device is housed in an 8-SOIC surface mount package and includes enable and error flag control features. With 20,400 units in current stock and active product status, this component serves applications requiring precision voltage regulation in compact form factors. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and functional feature parity across multiple manufacturers.

Substiute Parts

LP2951-02YM-TR

Microchip TechnologyIn Stock: 20468LP2951-02YM-TR Datasheet

Current PartRFQ

LP2951-03YM-TR

Microchip TechnologyIn Stock: 3460LP2951-03YM-TR Datasheet

Parametric EquivalentRFQ

LP2951ACDR2G

onsemiIn Stock: 45411LP2951ACDR2G Datasheet

MFR RecommendedRFQ

LP2951ACM/NOPB

Texas InstrumentsIn Stock: 2633LP2951ACM/NOPB Datasheet

MFR RecommendedRFQ

LP2951ACMX/NOPB

Texas InstrumentsIn Stock: 27464LP2951ACMX/NOPB Datasheet

MFR RecommendedRFQ

LP2951CM/NOPB

Texas InstrumentsIn Stock: 3298LP2951CM/NOPB Datasheet

MFR RecommendedRFQ

LP2951CMX/NOPB

Texas InstrumentsIn Stock: 57705LP2951CMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2951-02YM-TR are qualified based on the following critical parameters:

Electrical Compatibility Criteria:

• Output Configuration: Positive
• Output Type: Adjustable (Fixed)
• Number of Regulators: 1
• Voltage - Input (Max): 30V
• Voltage - Output (Min/Fixed): 1.24V or 1.235V (5V)
• Voltage - Output (Max): 29V or 30V
• Current - Output: 100mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount

Package Compatibility Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Supplier Device Package: 8-SOIC

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

All identified substitute parts maintain electrical equivalence within the specified parameter ranges and share identical package geometry, enabling direct board-level substitution without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment. The LP2951-03YM-TR from Microchip Technology provides parametric equivalence with identical electrical specifications and packaging, making it the primary substitute within the same manufacturer ecosystem. The onsemi LP2951ACDR2G variant offers improved dropout voltage performance (0.45V versus 0.6V) and lower quiescent current (120µA versus 150µA), beneficial for battery-powered or low-power applications, while maintaining 30V maximum output capability. Texas Instruments variants (LP2951ACM/NOPB, LP2951ACMX/NOPB, LP2951CM/NOPB, LP2951CMX/NOPB) provide enhanced protection features including over-current, over-temperature, and short-circuit protection, with the ACMX/NOPB and CMX/NOPB variants offering cut-tape packaging for automated assembly. All substitutes share identical 8-SOIC package geometry and MSL-1 moisture sensitivity rating, enabling direct board-level replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can LP2951-03YM-TR be used as a direct replacement for LP2951-02YM-TR?

A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical specifications, package geometry (8-SOIC), and compliance certifications. The LP2951-03YM-TR is a parametric equivalent with no functional differences.

Q: What are the key differences between Microchip and Texas Instruments variants?

A: Microchip variants (LP2951-02YM-TR, LP2951-03YM-TR) feature 150µA quiescent current and enable/error flag control. Texas Instruments variants (LP2951ACM/NOPB, LP2951ACMX/NOPB, LP2951CM/NOPB, LP2951CMX/NOPB) feature 120µA quiescent current and include over-current, over-temperature, and short-circuit protection. All maintain identical output current (100mA), voltage ranges, and operating temperature specifications.

Q: What is the difference between onsemi LP2951ACDR2G and other substitutes?

A: The onsemi LP2951ACDR2G offers superior dropout voltage performance (0.45V @ 100mA versus 0.6V) and lower quiescent current (120µA), making it advantageous for applications with tight power budgets. It also supports 30V maximum output voltage compared to 29V in most other variants. All other electrical and package specifications remain equivalent.

Q: Are packaging differences between Cut Tape and Tube significant for substitution?

A: Packaging format (Cut Tape/Digi-Reel versus Tube) affects supply chain logistics and automated assembly compatibility but does not impact electrical performance or board-level functionality. The 8-SOIC package geometry remains identical across all variants.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All identified substitutes are ROHS3 compliant, REACH unaffected, and carry MSL-1 (unlimited) moisture sensitivity rating, matching the original LP2951-02YM-TR specifications.

Q: Can I mix different manufacturer variants on the same board?

A: Yes. All variants share identical electrical specifications, package geometry, and pin configuration. However, design documentation should specify the selected manufacturer variant to ensure supply chain consistency and traceability.