LP2951CSDX-3.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2951CSDX-3.0/NOPB 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 and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for design continuity, production planning, and long-term component availability assurance.

Substiute Parts

LP2951CSDX-3.0/NOPB

Texas InstrumentsIn Stock: 937LP2951CSDX-3.0/NOPB Datasheet

Current PartRFQ

LP2951CSD-3.0/NOPB

Texas InstrumentsIn Stock: 3410LP2951CSD-3.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP2951CSDX-3.0/NOPB is determined by strict equivalence across the following critical parameters:

• 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)
• Current output (100mA)
• Quiescent current (120 µA)
• Control features (Enable)
• Protection features (Over Current, Over Temperature, Short Circuit)
• Operating temperature range (-40°C ~ 125°C)
• Package type (8-WDFN Exposed Pad / 8-WSON 4x4)
• Compliance certifications (ROHS3, REACH Unaffected)

Substitute parts must match all electrical and mechanical parameters without deviation. Packaging format variations (Cut Tape vs. alternative reels) do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The LP2951CSD-3.0/NOPB is a direct parametric equivalent to the LP2951CSDX-3.0/NOPB. Both devices share identical electrical specifications, protection features, and compliance certifications. The primary distinction is product status: the LP2951CSDX-3.0/NOPB is obsolete, while the LP2951CSD-3.0/NOPB maintains active status with current manufacturing and distribution support.

For new designs or production continuity, the LP2951CSD-3.0/NOPB is the appropriate selection. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and commercial applications. Packaging format differences (Cut Tape & Digi-Reel) do not affect functional performance or pinout compatibility.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The LP2951CSD-3.0/NOPB is the active production equivalent and direct substitute.

Q: What is the difference between these two part numbers?

A: The primary difference is product lifecycle status. LP2951CSDX-3.0/NOPB is obsolete; LP2951CSD-3.0/NOPB is active. All electrical characteristics, package dimensions, and pin configurations are identical.

Q: Are there packaging format differences between these parts?

A: The LP2951CSDX-3.0/NOPB uses standard packaging, while LP2951CSD-3.0/NOPB is available in Cut Tape (CT) and Digi-Reel formats. These are distribution variations only and do not affect component functionality or PCB assembly compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both LP2951CSDX-3.0/NOPB and LP2951CSD-3.0/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What output current does this regulator support?

A: Both parts deliver a maximum output current of 100mA with a maximum voltage dropout of 0.6V at this current level.

Q: What is the operating temperature range?

A: Both devices operate across -40°C to 125°C junction temperature, suitable for industrial and extended temperature applications.