LM2585S-5.0 Equivalent & Substitute Parts

Part Overview

The LM2585S-5.0 is a boost, flyback, and forward converter switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series. It provides a fixed 5V output at 3A (switch) with input voltage range of 4V to 40V and operates at 100kHz switching frequency. The device is housed in a TO-263-6 (D2PAK) surface mount package.

The LM2585S-5.0 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.

Substiute Parts

LM2585S-5.0

Texas InstrumentsIn Stock: 2372LM2585S-5.0 Datasheet

Current PartRFQ

LM2585S-5.0/NOPB

Texas InstrumentsIn Stock: 1132LM2585S-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2585S-5.0 is determined by strict equivalence across the following critical parameters:

• Input voltage range: 4V to 40V
• Fixed output voltage: 5V
• Output current capability: 3A (Switch)
• Switching frequency: 100kHz
• Topology support: Boost, Flyback, Forward Converter
• Package: TO-263-6 (D2PAK with 5 leads + tab)
• Surface mount configuration
• Operating temperature range: -40°C to 125°C

The LM2585S-5.0/NOPB is a direct manufacturer equivalent from Texas Instruments, sharing the identical base product number (LM2585) and all electrical and mechanical specifications. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM2585S-5.0/NOPB is the direct functional and electrical equivalent of the LM2585S-5.0. Both devices share identical electrical specifications, topology support, and package configuration.

The LM2585S-5.0/NOPB is recommended for new designs and ongoing production due to its active product status. This part maintains full compatibility with existing circuit designs while providing ROHS3 compliance, addressing regulatory requirements for modern manufacturing and supply chains.

The original LM2585S-5.0 remains functionally equivalent for applications where RoHS non-compliance is acceptable and where existing inventory or legacy system support is required.

Frequently Asked Questions (FAQ)

Q: Can the LM2585S-5.0/NOPB be used as a direct replacement for the LM2585S-5.0?

A: Yes. Both parts are electrically and mechanically identical. They share the same input voltage range (4V to 40V), fixed 5V output, 3A output current, 100kHz switching frequency, and TO-263-6 package configuration. The primary difference is product status and RoHS compliance.

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

A: The "/NOPB" suffix indicates the part is supplied in tube packaging and is RoHS3 compliant. This is a standard Texas Instruments designation for lead-free, halogen-free versions of their components.

Q: Are there any circuit design changes required when substituting the LM2585S-5.0 with the LM2585S-5.0/NOPB?

A: No. Both parts operate identically within the specified electrical and thermal parameters. No circuit modifications are necessary.

Q: Why is the LM2585S-5.0 marked as obsolete?

A: The LM2585S-5.0 has been superseded by the LM2585S-5.0/NOPB, which offers improved compliance certifications and active manufacturer support. Texas Instruments continues to recommend the /NOPB variant for all new applications.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. Both parts use the identical TO-263-6 (D2PAK) package with 5 leads plus tab. PCB footprints, thermal management considerations, and pin assignments are identical.

Q: What is the inventory status for these parts?

A: The LM2585S-5.0 has 2324 pieces in stock (new original). The LM2585S-5.0/NOPB has 1052 pieces in stock (new original). Availability may vary by distributor and region.