LM5000-3MTC Equivalent & Substitute Parts

Part Overview

The LM5000-3MTC is a boost, flyback, and forward converter switching regulator IC manufactured by Texas Instruments. It provides positive adjustable output voltage regulation with a 1.35A switch current capability in a 16-TSSOP surface mount package. The device operates across an input voltage range of 3.1V to 40V with adjustable output voltage up to 80V, making it suitable for multi-topology power management applications.

This part is currently in Last Time Buy status, indicating production discontinuation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for ongoing production and maintenance requirements.

Substiute Parts

LM5000-3MTC

Texas InstrumentsIn Stock: 2182LM5000-3MTC Datasheet

Current PartRFQ

LM5000-3MTC/NOPB

National SemiconductorIn Stock: 1248LM5000-3MTC/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM5000-3MTC is determined by strict equivalence across the following critical parameters:

• Topology and Function: Boost, Flyback, and Forward Converter capability with Step-Up and Step-Up/Step-Down functionality
• Electrical Specifications: Input voltage range 3.1V to 40V, adjustable output voltage up to 80V, 1.35A switch current
• Switching Frequency: 300kHz and 700kHz operation
• Package and Mounting: 16-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width)
• Operating Temperature Range: -40°C to 125°C junction temperature
• Output Configuration: Single positive adjustable output

The LM5000-3MTC/NOPB variant meets all these criteria and qualifies as a direct substitute. This variant maintains identical electrical and mechanical specifications while differing only in packaging designation (Bulk packaging versus standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The LM5000-3MTC/NOPB is a direct functional equivalent suitable for substitution in applications currently using the LM5000-3MTC. The primary distinction is product lifecycle status: the original LM5000-3MTC is in Last Time Buy phase, while the LM5000-3MTC/NOPB maintains Active status, ensuring continued availability and supply chain support.

Both parts share identical electrical performance specifications, package geometry, and thermal operating range. The LM5000-3MTC/NOPB variant is available in Bulk packaging, which may require evaluation against specific procurement and handling requirements of your application.

For designs requiring ROHS3 compliance verification, the LM5000-3MTC documentation confirms compliance. Compliance status for the LM5000-3MTC/NOPB variant should be confirmed with the supplier prior to final component selection.

Frequently Asked Questions (FAQ)

Q: Can the LM5000-3MTC/NOPB be used as a direct replacement for the LM5000-3MTC?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including input/output voltage ranges, switching current, frequency operation, package type, and thermal range. The primary difference is product status and packaging designation.

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

A: The "/NOPB" designation indicates Bulk packaging without lead-free plating. This affects procurement and handling procedures but does not alter electrical or mechanical performance.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist for PCB layout, schematic design, or thermal management. Both parts occupy identical footprints and require identical external component configurations.

Q: Why is the original LM5000-3MTC in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer has discontinued production. The LM5000-3MTC/NOPB variant maintains Active status, making it the recommended choice for new designs and ongoing production requirements.

Q: Should I verify RoHS compliance for the LM5000-3MTC/NOPB before use?

A: Yes. While the LM5000-3MTC is confirmed ROHS3 compliant, the compliance status of the LM5000-3MTC/NOPB variant should be confirmed with your supplier to ensure it meets your application's regulatory requirements.

Q: Are there any differences in switching frequency operation between these parts?

A: No. Both parts operate at identical switching frequencies of 300kHz and 700kHz with no performance variation.