LP2989IMX-3.0 Equivalent & Substitute Parts

Part Overview

The LP2989IMX-3.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. It delivers 500mA output current at a fixed 3V output with a maximum dropout voltage of 0.65V at full load. The device integrates over-current, over-temperature, and short-circuit protection, making it suitable for low-power supply applications requiring regulated 3V rails.

The LP2989IMX-3.0 is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for existing applications or redesigns.

Substiute Parts

LP2989IMX-3.0

Texas InstrumentsIn Stock: 895LP2989IMX-3.0 Datasheet

Current PartRFQ

LP2989AIMX-3.0/NOPB

Texas InstrumentsIn Stock: 2470LP2989AIMX-3.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP2989IMX-3.0 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 3V fixed output
• Output current capability: 500mA minimum
• Maximum input voltage: 16V or greater
• Dropout voltage: 0.65V @ 500mA or lower
• Package type: 8-SOIC surface mount
• Protection features: Over-current, over-temperature, and short-circuit protection
• Quiescent current: 175 µA
• PSRR: 60dB (1kHz)
• Control features: Enable function
• Operating temperature range: -40°C ~ 125°C

The LP2989AIMX-3.0/NOPB meets all these criteria and qualifies as a parametric equivalent. The primary distinction is product status: the substitute part is active and available, whereas the main part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The LP2989AIMX-3.0/NOPB is the direct parametric equivalent for the obsolete LP2989IMX-3.0. Both parts share identical electrical specifications and package geometry, ensuring pin-for-pin compatibility and functional equivalence in circuit applications.

The substitute part offers improved compliance status: it is ROHS3 compliant, whereas the original part is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations or procurement policies requiring compliant components.

The LP2989AIMX-3.0/NOPB is currently in active production with substantial inventory availability (2450 pcs), compared to the obsolete status of the original part. Selection of the substitute part ensures long-term supply chain continuity and eliminates obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can the LP2989AIMX-3.0/NOPB be used as a direct replacement for the LP2989IMX-3.0?

A: Yes. Both parts are identical in electrical performance and package configuration. The LP2989AIMX-3.0/NOPB is pin-for-pin compatible and requires no circuit modifications.

Q: What is the difference between LP2989IMX-3.0 and LP2989AIMX-3.0/NOPB?

A: The primary differences are product status and compliance. The LP2989AIMX-3.0/NOPB is active and ROHS3 compliant, while the LP2989IMX-3.0 is obsolete and RoHS non-compliant. Electrical specifications and package type are identical.

Q: Are there any packaging differences between these parts?

A: The LP2989IMX-3.0 is supplied in standard packaging, while the LP2989AIMX-3.0/NOPB is supplied in Tape & Reel (TR) format. Both use the same 8-SOIC package geometry. Tape & Reel packaging is standard for high-volume surface-mount assembly.

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" suffix indicates "No Plumbum" (lead-free), confirming RoHS compliance and the absence of lead in the component.

Q: Is the LP2989AIMX-3.0/NOPB suitable for applications requiring RoHS compliance?

A: Yes. The LP2989AIMX-3.0/NOPB is ROHS3 compliant and suitable for all applications with RoHS requirements.