LM2587S-5.0 Equivalent & Substitute Parts

Part Overview

The LM2587S-5.0 is a Boost, Flyback, and Forward Converter Switching Regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for positive fixed 5V output applications with 5A switch current capability. The device operates across a wide input voltage range of 4V to 40V and is housed in a TO-263-6 (D2PAK) surface mount package.

The LM2587S-5.0 carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

LM2587S-5.0

Texas InstrumentsIn Stock: 3673LM2587S-5.0 Datasheet

Current PartRFQ

LM2587S-5.0/NOPB

Texas InstrumentsIn Stock: 845LM2587S-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2587S-5.0 is determined by strict alignment with the following electrical and mechanical parameters:

• Output voltage specification: Fixed 5V positive output
• Output current capability: 5A switch current minimum
• Input voltage range: 4V to 40V operation
• Switching frequency: 100kHz nominal
• Operating temperature range: -40°C to 125°C (TJ)
• Package type: TO-263-6 (D2PAK with 5 leads plus tab)
• Surface mount configuration
• RoHS3 compliance requirement
• MSL rating: Level 3 or better

The LM2587S-5.0/NOPB qualifies as a direct substitute based on identical electrical specifications, package configuration, and compliance certifications. The primary distinction is product status: the original part is Last Time Buy, while the substitute maintains Active status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The LM2587S-5.0/NOPB is the designated manufacturer-recommended substitute for the LM2587S-5.0. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications, package configuration, and compliance certifications.

The primary advantage of selecting LM2587S-5.0/NOPB is its Active product status, ensuring continued manufacturing availability and supply chain stability. The original LM2587S-5.0 carries Last Time Buy status, indicating limited remaining inventory and no future production.

Both parts satisfy ROHS3 compliance and REACH unaffected requirements. The MSL rating of 3 (168 Hours) applies uniformly across both variants, establishing equivalent moisture handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: What does the "/NOPB" suffix indicate in the LM2587S-5.0/NOPB part number?

A: The "/NOPB" suffix designates a lead-free, RoHS-compliant variant with no plumbum (lead) content. This is a standard Texas Instruments nomenclature for environmentally compliant packaging.

Q: Are the LM2587S-5.0 and LM2587S-5.0/NOPB electrically identical?

A: Yes. Both parts deliver identical electrical performance across all specified parameters: 5V fixed output, 5A switch current, 4V to 40V input range, 100kHz switching frequency, and -40°C to 125°C operating temperature.

Q: Can I use LM2587S-5.0/NOPB as a direct replacement in existing designs?

A: Yes. The LM2587S-5.0/NOPB is a direct pin-for-pin and functionally equivalent substitute. No circuit modifications or PCB layout changes are required.

Q: Why is the original LM2587S-5.0 marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this specific variant. The LM2587S-5.0/NOPB remains in active production and is the recommended path forward for new designs and production continuity.

Q: Are there any package or thermal differences between these parts?

A: No. Both parts use the TO-263-6 (D2PAK) surface mount package with identical lead configuration, thermal characteristics, and MSL rating of 3 (168 Hours).

Q: What is the inventory status for each part?

A: The LM2587S-5.0 has 3,646 pieces in stock (Last Time Buy status). The LM2587S-5.0/NOPB has 804 pieces in stock with Active product status and ongoing manufacturing support.