LM2990S-5.0 Equivalent & Substitute Parts

Part Overview

The LM2990S-5.0 is a linear voltage regulator IC designed for negative fixed output applications. This negative 5V regulator delivers 1.8A output current in a TO-263 (DDPAK-3) surface mount package. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is essential for ongoing design support, production continuity, and long-term component availability planning.

Substiute Parts

LM2990S-5.0

Texas InstrumentsIn Stock: 2212LM2990S-5.0 Datasheet

Current PartRFQ

LM2990S-5.0/NOPB

Texas InstrumentsIn Stock: 1205LM2990S-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2990S-5.0 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: -5V fixed
• Output current capability: 1.8A minimum
• Input voltage rating: -26V maximum
• Package type: TO-263 (DDPAK-3) surface mount
• Voltage dropout characteristics: 1V @ 1A
• Protection features: Over temperature and short circuit protection
• Compliance certifications: ROHS3 compliance and REACH unaffected status

The LM2990S-5.0/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2990S-5.0/NOPB is the direct equivalent for the LM2990S-5.0. Both parts share identical electrical characteristics, thermal performance, and mechanical specifications. The LM2990S-5.0/NOPB maintains Active product status, ensuring continued availability and manufacturing support. Both parts meet ROHS3 compliance requirements and carry REACH unaffected designation, satisfying regulatory requirements for current applications.

Selection between these parts should be based on procurement requirements and packaging format. The LM2990S-5.0/NOPB is supplied in tube packaging, whereas the original part number does not specify packaging format. For new designs or production continuity, the LM2990S-5.0/NOPB is the preferred choice due to its Active status.

Frequently Asked Questions (FAQ)

Q: Can the LM2990S-5.0/NOPB directly replace the LM2990S-5.0 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same output voltage (-5V), output current (1.8A), input voltage rating (-26V), voltage dropout (1V @ 1A), and TO-263 package configuration. No circuit modifications are required.

Q: What is the difference between LM2990S-5.0 and LM2990S-5.0/NOPB?

A: The primary differences are product status and packaging format. The LM2990S-5.0 is Last Time Buy, while the LM2990S-5.0/NOPB is Active. The LM2990S-5.0/NOPB is supplied in tube packaging. Electrical specifications are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the LM2990S-5.0 and LM2990S-5.0/NOPB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the TO-263 package configuration?

A: The TO-263 (DDPAK-3) is a surface mount package with three leads plus a tab. This configuration provides thermal management through the tab connection and is suitable for applications requiring moderate current handling in compact form factors.

Q: Why is the original LM2990S-5.0 marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. The LM2990S-5.0/NOPB, with Active status, represents the current production equivalent and should be used for new designs and ongoing production requirements.