LM2586S-12 Equivalent & Substitute Parts

Part Overview

The LM2586S-12 is a fixed-output 12V switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for boost, flyback, and forward converter topologies. This component operates as a positive fixed-output regulator with a 3A switch current rating and supports input voltages from 4V to 40V. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

LM2586S-12

Texas InstrumentsIn Stock: 2749LM2586S-12 Datasheet

Current PartRFQ

LM2586S-12/NOPB

Texas InstrumentsIn Stock: 1474LM2586S-12/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2586S-12 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 12V
• Output current capability of 3A (Switch)
• Input voltage range of 4V to 40V
• Switching frequency range of 100kHz to 200kHz
• Boost, flyback, and forward converter topology support
• Positive fixed output configuration
• TO-263-8 / D2PAK (7 Leads + Tab) package compatibility
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C

The LM2586S-12/NOPB is identified as a direct substitute based on identical electrical specifications and mechanical packaging. The primary distinction between these parts is product status and compliance certification, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The LM2586S-12/NOPB is the direct functional equivalent for the obsolete LM2586S-12. Both parts share identical electrical specifications, pin configuration, and package geometry, ensuring drop-in compatibility at the circuit board level.

The LM2586S-12/NOPB carries active product status from Texas Instruments and meets ROHS3 compliance requirements, whereas the original LM2586S-12 is classified as obsolete and RoHS non-compliant. For new designs or production continuity, the LM2586S-12/NOPB is the appropriate selection. Both parts maintain equivalent moisture sensitivity levels and REACH compliance status.

Frequently Asked Questions (FAQ)

Q: Can the LM2586S-12/NOPB be used as a direct replacement for the LM2586S-12?

A: Yes. Both parts are electrically and mechanically identical. The LM2586S-12/NOPB is pin-compatible and functionally equivalent, with no circuit modifications required.

Q: What is the difference between LM2586S-12 and LM2586S-12/NOPB?

A: The primary differences are product status and compliance certification. The LM2586S-12/NOPB is active and ROHS3 compliant, while the LM2586S-12 is obsolete and RoHS non-compliant. Electrical performance and package specifications are identical.

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

A: No. Both parts use the TO-263-8 / D2PAK (7 Leads + Tab) surface mount package with identical pin assignments and mechanical dimensions.

Q: What is the significance of the "/NOPB" suffix?

A: The "/NOPB" designation indicates lead-free (no-lead) plating, consistent with RoHS3 compliance requirements. This affects solder joint reliability and thermal cycling performance in compliance-regulated applications.

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

A: Yes. The identical package footprint, pin configuration, and electrical specifications ensure direct interchangeability without PCB redesign.