LP2987AIMX-3.3 Equivalent & Substitute Parts

Part Overview

The LP2987AIMX-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 200mA current capacity in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device provides integrated protection features including over-current, over-temperature, and short-circuit protection, with an enable control feature for power management applications.

Substiute Parts

LP2987AIMX-3.3

Texas InstrumentsIn Stock: 840LP2987AIMX-3.3 Datasheet

Current PartRFQ

LP2987IM-3.3/NOPB

Texas InstrumentsIn Stock: 2326LP2987IM-3.3/NOPB Datasheet

MFR RecommendedRFQ

LP2986AIMX-3.3/NOPB

National SemiconductorIn Stock: 2207LP2986AIMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP2986IMX-3.3/NOPB

National SemiconductorIn Stock: 4371LP2986IMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP2988AIMX-3.3/NOPB

National SemiconductorIn Stock: 2737LP2988AIMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2987AIMX-3.3 is determined by matching the following critical parameters:

• Output voltage: 3.3V fixed
• Output current capacity: 200mA
• Input voltage rating: 16V maximum
• Voltage dropout: 0.35V @ 200mA
• Package type: 8-SOIC with identical physical dimensions
• Protection and control features: Over-current, over-temperature, short-circuit protection with enable control
• Operating temperature range: -40°C to 125°C

All substitute parts listed maintain identical electrical specifications and package compatibility, ensuring direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The LP2987IM-3.3/NOPB from Texas Instruments is the primary recommended substitute, as it maintains active product status from the original manufacturer while providing identical electrical and mechanical specifications. This part is available in higher inventory quantities (2300 pcs) and carries explicit ROHS3 compliance certification.

The LP2986AIMX-3.3/NOPB, LP2986IMX-3.3/NOPB, and LP2988AIMX-3.3/NOPB from National Semiconductor are parametric equivalents with active product status. These parts deliver identical performance characteristics and package compatibility. Selection among these alternatives should be based on procurement availability and supply chain requirements, as all three maintain the same electrical specifications and protection features.

All substitute parts are REACH unaffected and carry EAR99 export classification, matching the compliance profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can LP2987IM-3.3/NOPB directly replace LP2987AIMX-3.3 in existing designs?

A: Yes. Both parts share identical electrical specifications, output voltage, current capacity, dropout voltage, and 8-SOIC package dimensions. The primary difference is product status: LP2987IM-3.3/NOPB is active while LP2987AIMX-3.3 is obsolete.

Q: What is the difference between LP2986 and LP2988 series substitutes?

A: The LP2986AIMX-3.3/NOPB, LP2986IMX-3.3/NOPB, and LP2988AIMX-3.3/NOPB are parametric equivalents with identical electrical performance for this 3.3V 200mA application. Selection is based on availability and supply chain considerations.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitutes use the 8-SOIC package with 0.154" width and 3.90mm physical dimensions, ensuring direct PCB compatibility without layout modifications.

Q: Do substitute parts maintain the same protection features?

A: Yes. All substitute parts include over-current protection, over-temperature protection, and short-circuit protection with enable control functionality, matching the original LP2987AIMX-3.3 specifications.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -40°C to 125°C, identical to the original part, supporting the same thermal design requirements.

Q: Are there packaging differences between substitutes?

A: LP2987IM-3.3/NOPB is supplied in tube packaging, while LP2986 and LP2988 series are supplied in bulk packaging. This affects handling and storage but does not impact electrical performance or PCB assembly compatibility.