LP2989AIMX-5.0 Equivalent & Substitute Parts

Part Overview

The LP2989AIMX-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 500mA current capacity. This device operates in the 8-SOIC surface mount package and includes integrated protection features for over-current, over-temperature, and short-circuit conditions. The main part number is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

LP2989AIMX-5.0

Texas InstrumentsIn Stock: 832LP2989AIMX-5.0 Datasheet

Current PartRFQ

LP2989AIMX-5.0/NOPB

Texas InstrumentsIn Stock: 819LP2989AIMX-5.0/NOPB Datasheet

DirectRFQ

LP2989IMX-5.0/NOPB

National SemiconductorIn Stock: 4912LP2989IMX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2989AIMX-5.0 are classified based on strict electrical and mechanical parameter matching:

Direct Manufacturer Equivalent (LP2989AIMX-5.0/NOPB): This part maintains identical electrical specifications and package configuration. The primary distinction is packaging format (Cut Tape & Digi-Reel versus standard packaging) and RoHS compliance status (ROHS3 Compliant versus non-compliant). All critical parameters including output voltage, current rating, dropout voltage, quiescent current, PSRR, protection features, and operating temperature range are identical.

Parametric Equivalent (LP2989IMX-5.0/NOPB): This National Semiconductor part matches all electrical and mechanical specifications of the main part. Key matching parameters include 5V fixed output, 500mA output current, 0.65V maximum dropout voltage at 500mA, 175 µA quiescent current, 60dB PSRR at 1kHz, identical protection features, and 8-SOIC package configuration. The product status is Active, providing long-term availability advantage.

Substitution eligibility is determined by matching the following critical parameters: output voltage (5V fixed), output current (500mA), voltage dropout (0.65V @ 500mA), quiescent current (175 µA), PSRR (60dB @ 1kHz), protection features (Over Current, Over Temperature, Short Circuit), operating temperature range (-40°C ~ 125°C), and package type (8-SOIC).

Parameter Comparison

Engineering Selection Recommendations

LP2989AIMX-5.0/NOPB is the direct manufacturer equivalent with identical electrical performance and package specifications. This part is preferred for applications requiring ROHS3 compliance. Both the main part and this equivalent are classified as obsolete, indicating limited future availability.

LP2989IMX-5.0/NOPB is the parametric equivalent offering identical electrical and mechanical specifications with the advantage of Active product status. This part provides superior long-term procurement continuity and availability compared to the obsolete main part number. Selection of this part is appropriate for new designs or redesigns requiring sustained component supply.

For applications with existing inventory of LP2989AIMX-5.0, direct substitution with LP2989AIMX-5.0/NOPB is electrically and mechanically transparent. For new procurement or long-term production requirements, LP2989IMX-5.0/NOPB is the recommended choice due to active product status and equivalent performance specifications.

Frequently Asked Questions (FAQ)

Q: Can LP2989AIMX-5.0/NOPB be used as a direct replacement for LP2989AIMX-5.0?

A: Yes. Both parts are Texas Instruments products with identical electrical specifications, output voltage (5V), current rating (500mA), dropout voltage (0.65V @ 500mA), quiescent current (175 µA), PSRR (60dB @ 1kHz), protection features, operating temperature range (-40°C ~ 125°C), and 8-SOIC package configuration. The primary difference is packaging format and RoHS compliance status.

Q: Is LP2989IMX-5.0/NOPB compatible with designs using LP2989AIMX-5.0?

A: Yes. LP2989IMX-5.0/NOPB matches all critical electrical and mechanical parameters: 5V fixed output, 500mA output current, 0.65V maximum dropout voltage at 500mA, 175 µA quiescent current, 60dB PSRR at 1kHz, identical protection features (Over Current, Over Temperature, Short Circuit), operating temperature range (-40°C ~ 125°C), and 8-SOIC package. Pin configuration and functional behavior are equivalent.

Q: What is the advantage of LP2989IMX-5.0/NOPB over the main part number?

A: LP2989IMX-5.0/NOPB has Active product status, ensuring long-term availability and procurement continuity. The main part LP2989AIMX-5.0 is classified as obsolete, which may result in limited stock and future unavailability.

Q: Are there any compliance differences between these parts?

A: LP2989AIMX-5.0/NOPB is ROHS3 Compliant. The main part LP2989AIMX-5.0 is RoHS non-compliant. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All three parts use the identical 8-SOIC (0.154", 3.90mm Width) surface mount package with the same pin configuration. PCB layout and footprint requirements are identical, allowing direct substitution without design modification.

Q: What inventory status should influence part selection?

A: LP2989IMX-5.0/NOPB has the highest inventory availability (4860 Pcs) with Active product status, making it the most reliable choice for ongoing production. LP2989AIMX-5.0/NOPB has moderate inventory (717 Pcs) but obsolete status. The main part LP2989AIMX-5.0 has 773 Pcs but is also obsolete.