LP2989AIMM-3.3 Equivalent & Substitute Parts

Part Overview

The LP2989AIMM-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 500mA current capacity in an 8-VSSOP surface mount package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. The part provides integrated protection features including over-current, over-temperature, and short-circuit protection, with an enable control feature for power management applications.

Substiute Parts

LP2989AIMM-3.3

Texas InstrumentsIn Stock: 2727LP2989AIMM-3.3 Datasheet

Current PartRFQ

LP2989IMM-3.3/NOPB

Texas InstrumentsIn Stock: 2106LP2989IMM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2989AIMM-3.3 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 3.3V fixed
• Output current capacity: 500mA minimum
• Maximum input voltage: 16V or greater
• Package compatibility: 8-VSSOP surface mount
• Protection features: Over-current, over-temperature, and short-circuit protection
• Control capability: Enable function
• Operating temperature range: -40°C to 125°C minimum

The LP2989IMM-3.3/NOPB qualifies as a parametric equivalent substitute, maintaining identical electrical specifications and package form factor while differing in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LP2989IMM-3.3/NOPB serves as the direct parametric equivalent for the LP2989AIMM-3.3. Both parts maintain identical electrical performance specifications and package compatibility. The primary distinction lies in compliance status: the substitute part achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the LP2989IMM-3.3/NOPB is the appropriate selection. Both parts carry obsolete product status, indicating limited future availability through standard distribution channels.

Frequently Asked Questions (FAQ)

Q: Can LP2989IMM-3.3/NOPB be used as a direct replacement for LP2989AIMM-3.3?

A: Yes. Both parts are electrically identical with matching output voltage (3.3V), current capacity (500mA), input voltage rating (16V maximum), dropout voltage (0.65V @ 500mA), and package type (8-VSSOP). The substitute part differs only in RoHS compliance status and packaging format.

Q: What is the significance of the product status being obsolete?

A: Obsolete status indicates that Texas Instruments has discontinued active production and support for this device. Both the main part and substitute are affected. New designs should evaluate current-generation alternatives from the LP2989 series or other contemporary linear regulator offerings.

Q: Are there package compatibility concerns between these parts?

A: No. Both parts use the 8-VSSOP package (8-TSSOP, 8-MSOP with 0.118" width, 3.00mm). PCB footprints and thermal characteristics are identical. The difference in packaging format (tube versus cut tape/digi-reel) affects supply and handling only, not electrical or mechanical compatibility.

Q: Does RoHS3 compliance of the substitute affect circuit performance?

A: No. RoHS3 compliance reflects material composition and environmental standards compliance, not electrical performance. The substitute part maintains all electrical specifications of the main part.

Q: What protection features are included in both parts?

A: Both the LP2989AIMM-3.3 and LP2989IMM-3.3/NOPB include integrated over-current protection, over-temperature protection, and short-circuit protection. These features are identical across both parts.