LM2585T-ADJ Equivalent & Substitute Parts

Part Overview

The LM2585T-ADJ is a boost, flyback, and forward converter switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series. It provides positive adjustable output voltage regulation with a minimum output of 1.23V and maximum of 60V, delivering up to 3A switch current. The device operates across an input voltage range of 4V to 40V with a fixed switching frequency of 100kHz and is housed in a TO-220-5 package with formed leads.

The LM2585T-ADJ carries a Last Time Buy status, indicating that Texas Instruments has discontinued active production. This necessitates identifying equivalent substitute parts for ongoing design support and procurement continuity.

Substiute Parts

LM2585T-ADJ

Texas InstrumentsIn Stock: 7093LM2585T-ADJ Datasheet

Current PartRFQ

LM2585T-ADJ/NOPB

Texas InstrumentsIn Stock: 2614LM2585T-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2585T-ADJ 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 Configuration: Positive adjustable output with 1.23V minimum and 60V maximum
• Current Rating: 3A switch current
• Input Voltage Range: 4V to 40V
• Switching Frequency: 100kHz fixed
• Package: TO-220-5 Formed Leads
• Thermal Range: -40°C to 125°C junction temperature
• Compliance: ROHS3 compliant, MSL 1 rating

The LM2585T-ADJ/NOPB is the direct manufacturer-recommended substitute, maintaining identical electrical specifications and package configuration while differing only in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2585T-ADJ/NOPB is the direct equivalent substitute for the LM2585T-ADJ. Both devices are manufactured by Texas Instruments and maintain identical electrical and thermal specifications. The primary distinction is product lifecycle status: the original LM2585T-ADJ is designated Last Time Buy, while the LM2585T-ADJ/NOPB carries Active status, ensuring continued availability and manufacturing support.

Both parts satisfy ROHS3 compliance and carry MSL 1 (Unlimited) moisture sensitivity ratings, making them suitable for standard manufacturing and storage environments without special handling requirements. The packaging difference (standard versus tube format) does not affect electrical performance or PCB integration.

For new designs or ongoing production requiring long-term component availability, the LM2585T-ADJ/NOPB is the recommended selection due to its Active product status.

Frequently Asked Questions (FAQ)

Q: Can the LM2585T-ADJ/NOPB be used as a direct replacement for the LM2585T-ADJ?

A: Yes. Both devices are electrically and mechanically identical. They share the same TO-220-5 package, electrical ratings, thermal specifications, and compliance certifications. The only difference is product lifecycle status and packaging format.

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" suffix designates "No Plumbum" (lead-free) packaging, indicating compliance with lead-free manufacturing standards. Both the LM2585T-ADJ and LM2585T-ADJ/NOPB are ROHS3 compliant.

Q: Are there any PCB layout or thermal management differences between these parts?

A: No. Both devices use the identical TO-220-5 Formed Leads package with the same pin configuration, thermal characteristics, and mounting requirements. Existing PCB designs require no modification.

Q: Why is the LM2585T-ADJ marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has concluded active production of this part number. The LM2585T-ADJ/NOPB remains in active production and is the recommended long-term source for this device family.

Q: What is the difference between tube and standard packaging?

A: Tube packaging provides protective containment for automated assembly processes and reduces component damage during handling and storage. Standard packaging uses alternative containment methods. Both formats contain identical components with no electrical or performance differences.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both devices operate across the full temperature range of -40°C to 125°C junction temperature, supporting industrial and automotive applications within this thermal envelope.