LP2951CSDX-3.0 Equivalent & Substitute Parts

Part Overview

The LP2951CSDX-3.0 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable (fixed) output applications. This device delivers 100mA output current in an 8-WSON (4x4) surface mount package with integrated protection features including over-current, over-temperature, and short-circuit protection.

The LP2951CSDX-3.0 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

LP2951CSDX-3.0

Texas InstrumentsIn Stock: 1090LP2951CSDX-3.0 Datasheet

Current PartRFQ

LP2951CSD-3.0/NOPB

Texas InstrumentsIn Stock: 3410LP2951CSD-3.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP2951CSDX-3.0 is determined by strict equivalence across the following critical parameters:

• Base product number (LP2951 series)
• Output configuration (Positive)
• Output type (Adjustable/Fixed)
• Number of regulators (1)
• Voltage specifications (Input Max: 30V, Output Min/Fixed: 1.235V/3V, Output Max: 29V)
• Voltage dropout (0.6V @ 100mA)
• Output current (100mA)
• Quiescent current (120 µA)
• Protection features (Over Current, Over Temperature, Short Circuit)
• Operating temperature range (-40°C ~ 125°C)
• Package type (8-WSON 4x4)

The LP2951CSD-3.0/NOPB meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The LP2951CSD-3.0/NOPB is the direct substitute for the obsolete LP2951CSDX-3.0. Both parts share identical electrical and mechanical specifications, including voltage ratings, current capabilities, protection features, and package configuration.

The primary distinction is product status: the LP2951CSDX-3.0 is obsolete, while the LP2951CSD-3.0/NOPB is active and currently in production. Additionally, the substitute part carries ROHS3 compliance, whereas the original part is RoHS non-compliant. Both parts maintain equivalent moisture sensitivity levels and REACH status.

For new designs or production continuity, the LP2951CSD-3.0/NOPB is the appropriate selection. The active product status ensures ongoing availability and supply chain support.

Frequently Asked Questions (FAQ)

Q: Can the LP2951CSD-3.0/NOPB directly replace the LP2951CSDX-3.0 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including voltage ratings, current output, protection features, operating temperature range, and 8-WSON (4x4) package configuration. No circuit modifications are required.

Q: What is the significance of the product status difference?

A: The LP2951CSDX-3.0 is classified as obsolete and is no longer manufactured. The LP2951CSD-3.0/NOPB is an active product in current production, ensuring reliable supply availability and long-term support for ongoing applications.

Q: Are there packaging differences between these parts?

A: No. Both parts use identical surface mount packaging: 8-WDFN Exposed Pad with 8-WSON (4x4) supplier device package configuration. Mounting and PCB layout requirements are identical.

Q: Does the RoHS compliance difference affect compatibility?

A: The LP2951CSD-3.0/NOPB is ROHS3 compliant, while the LP2951CSDX-3.0 is RoHS non-compliant. This distinction is relevant for regulatory and procurement requirements. Functionally, both parts operate identically within the specified electrical parameters.

Q: Are the moisture sensitivity levels the same?

A: Yes. Both parts carry MSL 1 (Unlimited), indicating equivalent moisture handling and storage requirements.