LM2587T-12 Equivalent & Substitute Parts

Part Overview

The LM2587T-12 is a Boost, Flyback, and Forward Converter Switching Regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for positive fixed 12V output applications with 5A switch current capability. The device operates across a 4V to 40V input range and is housed in a TO-220-5 package with formed leads.

The LM2587T-12 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator topology.

Substiute Parts

LM2587T-12

Texas InstrumentsIn Stock: 2268LM2587T-12 Datasheet

Current PartRFQ

LM2587T-12/NOPB

Texas InstrumentsIn Stock: 3365LM2587T-12/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2587T-12 is determined by strict equivalence across the following critical parameters:

• Topology & Function: Boost, Flyback, Forward Converter switching regulator with Step-Up and Step-Up/Step-Down capability
• Output Specification: Fixed positive 12V output
• Electrical Performance: 5A switch current, 100kHz switching frequency
• Input Range: 4V to 40V operation
• Thermal Range: -40°C to 125°C junction temperature
• Package: TO-220-5 Formed Leads through-hole mounting
• Manufacturer Series: SIMPLE SWITCHER® family

The LM2587T-12/NOPB qualifies as a direct substitute based on identical electrical specifications, topology, output voltage, current rating, switching frequency, temperature range, and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM2587T-12/NOPB is the direct functional equivalent of the LM2587T-12. Both devices share identical electrical specifications, topology, output voltage, current rating, switching frequency, temperature range, and package configuration.

The LM2587T-12/NOPB is classified as Active product status, ensuring ongoing manufacturer support and availability. The LM2587T-12 is Obsolete, which may result in limited inventory and discontinued production.

The LM2587T-12/NOPB carries ROHS3 compliance certification, whereas the LM2587T-12 is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements.

Both devices are REACH Unaffected and carry EAR99 ECCN classification. The HTSUS code is identical for both parts.

Selection between these parts should be based on availability, compliance requirements, and supply chain considerations. Electrical and mechanical compatibility is assured.

Frequently Asked Questions (FAQ)

Q: Can the LM2587T-12/NOPB be used as a direct replacement for the LM2587T-12?

A: Yes. Both devices are electrically and mechanically identical. They share the same topology, output voltage (12V fixed), current rating (5A switch), switching frequency (100kHz), input range (4V to 40V), operating temperature range (-40°C to 125°C), and TO-220-5 package configuration.

Q: What is the difference between LM2587T-12 and LM2587T-12/NOPB?

A: The primary differences are product status and compliance certification. The LM2587T-12/NOPB is Active and ROHS3 compliant, while the LM2587T-12 is Obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Why is the LM2587T-12 marked as Obsolete?

A: Obsolete status indicates that Texas Instruments has discontinued production of this specific part number. The LM2587T-12/NOPB remains in active production and is the recommended alternative for new designs and ongoing supply requirements.

Q: Are there any package differences between these parts?

A: Both parts use the TO-220-5 Formed Leads package for through-hole mounting. The LM2587T-12/NOPB is supplied in Tube packaging, while the LM2587T-12 packaging type is not specified. The physical component package is identical.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both devices deliver identical electrical characteristics and switching behavior.

Q: Can I use these parts interchangeably in existing designs?

A: Yes. The LM2587T-12/NOPB is a direct substitute for the LM2587T-12. No circuit modifications, PCB layout changes, or firmware updates are required. Pin configuration, electrical ratings, and thermal characteristics are identical.