LP2989IMM-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP2989IMM-2.5/NOPB is a linear voltage regulator IC from Texas Instruments designed for power management applications. It delivers a fixed 2.5V output at 500mA with low dropout voltage and integrated protection features. The device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

LP2989IMM-2.5/NOPB

Texas InstrumentsIn Stock: 1026LP2989IMM-2.5/NOPB Datasheet

Current PartRFQ

LP2989AIMM-2.5/NOPB

National SemiconductorIn Stock: 2010LP2989AIMM-2.5/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2989IMM-2.5/NOPB are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

• Fixed output voltage of 2.5V
• Output current rating of 500mA
• Maximum input voltage of 16V
• Dropout voltage of 0.65V @ 500mA
• Quiescent current of 175 µA
• PSRR of 60dB (1kHz)
• Package type: 8-VSSOP
• Operating temperature range: -40°C ~ 125°C
• Integrated protection features: Over Current, Over Temperature, Short Circuit
• Enable control feature

The LP2989AIMM-2.5/NOPB meets all specified parameters and qualifies as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The LP2989AIMM-2.5/NOPB is a direct parametric equivalent to the LP2989IMM-2.5/NOPB. Both devices share identical electrical specifications, output characteristics, and package configuration. The primary distinction is product status: the original part is obsolete while the substitute is active in production.

Selection of the LP2989AIMM-2.5/NOPB is supported by its active product status, ensuring continued availability for new designs and production runs. The device maintains ROHS3 compliance and carries the same moisture sensitivity rating, confirming compatibility with existing manufacturing and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LP2989AIMM-2.5/NOPB replace the LP2989IMM-2.5/NOPB in existing designs?

A: Yes. Both devices are parametrically identical across all electrical specifications, output voltage, current rating, dropout voltage, quiescent current, PSRR, protection features, and package type. Direct substitution is supported without circuit modification.

Q: Why is the original LP2989IMM-2.5/NOPB marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by Texas Instruments. The LP2989AIMM-2.5/NOPB provides continued access to equivalent functionality with active product support.

Q: Are there package compatibility concerns between these parts?

A: No. Both devices use the 8-VSSOP package with identical pinout and mechanical dimensions (0.118", 3.00mm Width). PCB layout and assembly processes require no modification.

Q: What compliance certifications apply to the substitute part?

A: The LP2989AIMM-2.5/NOPB maintains ROHS3 compliance and carries Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory requirements of the original part.

Q: Are there inventory or lead time advantages to using the substitute?

A: The LP2989AIMM-2.5/NOPB is actively produced and stocked, providing improved availability compared to the obsolete original part.