LP2989AIM-5.0 Equivalent & Substitute Parts

Part Overview

The LP2989AIM-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications. This device delivers 500mA output current with a maximum dropout voltage of 0.65V at full load, making it suitable for low-power supply applications requiring stable 5V regulation. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is essential for design continuity, long-term sourcing strategy, and inventory management as original stock becomes depleted.

Substiute Parts

LP2989AIM-5.0

Texas InstrumentsIn Stock: 2236LP2989AIM-5.0 Datasheet

Current PartRFQ

LP2989AIM-5.0/NOPB

Texas InstrumentsIn Stock: 3040LP2989AIM-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2989AIM-5.0 is determined by strict equivalence across the following critical parameters:

• Output voltage: Fixed 5V
• Output current capability: 500mA minimum
• Input voltage range: Maximum 16V
• Dropout voltage: 0.65V or lower at 500mA
• Package type: 8-SOIC form factor
• Mounting: Surface mount
• Regulatory compliance: ROHS3 compliant, REACH unaffected
• Temperature range: -40°C to 125°C operation

The LP2989AIM-5.0/NOPB represents a direct manufacturer equivalent with identical electrical specifications and package configuration. The primary distinction is packaging format (Tube versus standard packaging) and lead-free designation (NOPB suffix). Both parts share the same base product number (LP2989) and maintain full functional and pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the LP2989AIM-5.0 and LP2989AIM-5.0/NOPB are Last Time Buy products from Texas Instruments, indicating discontinued or end-of-life status. Selection between these two parts should be based on:

• Packaging requirements: The LP2989AIM-5.0/NOPB is supplied in Tube packaging, which may be preferred for automated assembly processes or specific inventory management protocols.
• Lead-free compliance: The NOPB designation confirms lead-free construction, meeting modern environmental and regulatory standards.
• Inventory availability: Current stock levels show 3026 units available for the LP2989AIM-5.0/NOPB versus 2220 units for the LP2989AIM-5.0, providing greater sourcing flexibility.
• Regulatory compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, suitable for applications requiring environmental certification.

For new designs or long-term production planning, evaluation of alternative regulators with active product status is recommended to ensure sustained supply chain availability beyond current inventory levels.

Frequently Asked Questions (FAQ)

Q: Are LP2989AIM-5.0 and LP2989AIM-5.0/NOPB pin-for-pin compatible?

A: Yes. Both parts share identical pin configuration, electrical characteristics, and 8-SOIC package dimensions. They are direct functional equivalents with no circuit modifications required for substitution.

Q: What does the NOPB suffix indicate?

A: NOPB designates "No Plumbum" (lead-free) construction. This confirms the part meets RoHS3 requirements and uses lead-free solder connections, standard for modern electronics manufacturing.

Q: Can these parts be used interchangeably in production?

A: Yes, provided your assembly process accommodates the packaging format. The LP2989AIM-5.0/NOPB in Tube packaging is optimized for pick-and-place automation, while standard packaging may suit manual or alternative assembly methods.

Q: Why is this part marked Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued this product line. Current inventory represents the final manufacturing run. Once depleted, these specific part numbers will no longer be available from the manufacturer.

Q: What is the maximum input voltage for this regulator?

A: The maximum input voltage is 16V. Operating beyond this specification risks device damage and loss of regulation.

Q: Does this regulator include protection features?

A: Yes. The LP2989AIM-5.0 includes over-current protection, over-temperature protection, and short-circuit protection to safeguard against fault conditions.

Q: What is the typical quiescent current consumption?

A: Quiescent current is 175 µA, representing the device's no-load current draw. This is relevant for battery-powered or low-power standby applications.