LP2989IM-1.8 Equivalent & Substitute Parts

Part Overview

The LP2989IM-1.8 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.8V output applications. This Surface Mount device delivers 500mA output current in an 8-SOIC package and includes integrated protection features for over-current, over-temperature, and short-circuit conditions. The main part number is currently in Last Time Buy status, making equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

LP2989IM-1.8

Texas InstrumentsIn Stock: 3890LP2989IM-1.8 Datasheet

Current PartRFQ

LP2989IM-1.8/NOPB

Texas InstrumentsIn Stock: 1955LP2989IM-1.8/NOPB Datasheet

DirectRFQ

LP2989AIM-1.8/NOPB

Texas InstrumentsIn Stock: 892LP2989AIM-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2989IM-1.8 are qualified based on the following critical parameters that determine functional equivalence:

• Output voltage specification: 1.8V fixed
• Output current capability: 500mA minimum
• Input voltage range: 16V maximum
• Voltage dropout characteristics: 0.65V @ 500mA
• Package type: 8-SOIC form factor
• Protection features: Over-current, over-temperature, short-circuit
• Operating temperature range: -40°C ~ 125°C
• Control interface: Enable pin functionality

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the original LP2989IM-1.8 specification.

Parameter Comparison

Engineering Selection Recommendations

LP2989IM-1.8/NOPB is the direct manufacturer equivalent with Active product status, providing continuity for new designs and ongoing production. This part carries ROHS3 compliance and maintains identical electrical and mechanical specifications to the original LP2989IM-1.8.

LP2989AIM-1.8/NOPB is a parametric equivalent offering Active product status with full specification alignment. Both substitute parts are suitable for direct replacement in applications currently using the LP2989IM-1.8, with the advantage of Active lifecycle status for long-term availability.

Selection between LP2989IM-1.8/NOPB and LP2989AIM-1.8/NOPB should be based on procurement availability and supply chain requirements, as both parts deliver identical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can LP2989IM-1.8/NOPB be used as a direct replacement for LP2989IM-1.8?

A: Yes. LP2989IM-1.8/NOPB is the direct manufacturer equivalent with identical electrical performance, output voltage, current rating, dropout voltage, and 8-SOIC package configuration. The primary difference is product status: LP2989IM-1.8/NOPB is Active while the original is Last Time Buy.

Q: What is the difference between LP2989IM-1.8/NOPB and LP2989AIM-1.8/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications and 8-SOIC packaging. The difference lies in the device grade designation (IM vs. AIM). Both maintain Active product status and full ROHS3 compliance.

Q: Are all substitute parts compatible with existing PCB layouts?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and electrical compatibility with existing board designs without layout modifications.

Q: What protection features are included in these regulators?

A: All listed parts include integrated over-current, over-temperature, and short-circuit protection with Enable control functionality.

Q: Are these parts suitable for -40°C to 125°C operating environments?

A: Yes. All substitute parts are rated for -40°C to 125°C operating temperature range with MSL 1 (Unlimited) moisture sensitivity level.