LP2987IM-3.3 Equivalent & Substitute Parts

Part Overview

The LP2987IM-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 substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

LP2987IM-3.3

Texas InstrumentsIn Stock: 1505LP2987IM-3.3 Datasheet

Current PartRFQ

LP2987IM-3.3/NOPB

Texas InstrumentsIn Stock: 2326LP2987IM-3.3/NOPB Datasheet

DirectRFQ

LP2986AIM-3.3/NOPB

Texas InstrumentsIn Stock: 1179LP2986AIM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP2986IM-3.3/NOPB

Texas InstrumentsIn Stock: 1532LP2986IM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2987IM-3.3 is determined by strict equivalence across the following critical parameters:

• Output voltage configuration: Positive fixed 3.3V
• Output current capacity: 200mA
• Maximum input voltage: 16V
• Voltage dropout specification: 0.35V @ 200mA
• Quiescent current: 120 µA
• PSRR performance: 65dB (1kHz)
• Package type: 8-SOIC with identical physical dimensions
• Operating temperature range: -40°C ~ 125°C
• Protection features: Over Current, Over Temperature, Short Circuit
• Control features: Enable function

All substitute parts maintain these specifications without deviation. The primary distinction between the main part and substitutes is product status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

LP2987IM-3.3/NOPB is the direct manufacturer equivalent with active product status. This part is functionally identical to the obsolete LP2987IM-3.3 and carries ROHS3 compliance certification, making it suitable for new designs and ongoing production requiring regulatory compliance.

LP2986IM-3.3/NOPB and LP2986AIM-3.3/NOPB are parametric equivalents from the LP2986 base product line. Both maintain all electrical and mechanical specifications of the original part while offering active product status and ROHS3 compliance. The distinction between LP2986IM and LP2986AIM variants relates to base product classification rather than electrical performance.

For applications requiring regulatory compliance with modern standards, any of the three active substitute parts are suitable. For direct part number replacement with minimal design impact, LP2987IM-3.3/NOPB is the primary choice. For applications where base product line flexibility is acceptable, LP2986 variants provide equivalent functionality with confirmed active availability.

Frequently Asked Questions (FAQ)

Q: Can LP2987IM-3.3/NOPB be used as a direct replacement for LP2987IM-3.3?

A: Yes. LP2987IM-3.3/NOPB is the direct manufacturer equivalent with identical electrical specifications, output voltage, current capacity, and package configuration. The primary difference is product status (active versus obsolete) and RoHS compliance level.

Q: What is the difference between LP2986IM-3.3/NOPB and LP2986AIM-3.3/NOPB?

A: Both parts maintain identical electrical and mechanical specifications. The difference is in the base product number designation (LP2986 versus LP2986A). From an engineering perspective, both are parametric equivalents with equivalent performance characteristics.

Q: Are all substitute parts pin-compatible with the original LP2987IM-3.3?

A: Yes. All substitute parts use the 8-SOIC package with identical physical dimensions (0.154", 3.90mm Width) and maintain the same pin configuration for surface mount assembly.

Q: Does the NOPB suffix affect electrical performance?

A: No. The NOPB suffix indicates lead-free plating and does not alter electrical specifications or functional performance. It reflects manufacturing and compliance standards.

Q: Which substitute part should be selected for new designs?

A: LP2987IM-3.3/NOPB is recommended for direct replacement. For applications where base product line flexibility is acceptable, LP2986IM-3.3/NOPB or LP2986AIM-3.3/NOPB provide equivalent performance with confirmed active status.

Q: Are there any thermal or performance differences between the substitute parts?

A: No. All parts maintain identical thermal specifications, quiescent current (120 µA), voltage dropout (0.35V @ 200mA), and PSRR performance (65dB at 1kHz).

Q: What is the significance of ROHS3 compliance on the substitute parts?

A: ROHS3 compliance indicates adherence to current Restriction of Hazardous Substances regulations. The original LP2987IM-3.3 is RoHS non-compliant, while all substitute parts are ROHS3 compliant, making them suitable for applications with regulatory compliance requirements.