LM5000-3MTCX Equivalent & Substitute Parts

Part Overview

The LM5000-3MTCX is a boost, flyback, and forward converter switching regulator IC manufactured by Texas Instruments. It provides positive adjustable output voltage regulation with a single 1.35A switch output, designed for applications requiring step-up or step-up/step-down conversion topologies. The device operates across a wide input voltage range of 3.1V to 40V with adjustable output voltage up to 80V, making it suitable for diverse power management applications.

The LM5000-3MTCX is currently designated as Last Time Buy, indicating limited future availability. This status necessitates identification of equivalent substitute parts to ensure design continuity and long-term supply chain reliability.

Substiute Parts

LM5000-3MTCX

Texas InstrumentsIn Stock: 3465LM5000-3MTCX Datasheet

Current PartRFQ

LM5000-3MTCX/NOPB

Texas InstrumentsIn Stock: 35280LM5000-3MTCX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Topology and Function: Boost, Flyback, Forward Converter switching regulator with Step-Up and Step-Up/Step-Down capability
• Electrical Specifications: Input voltage range 3.1V to 40V, adjustable output voltage 3.1V to 80V, 1.35A switch output current
• Switching Frequency: 300kHz and 700kHz operation
• Package and Mounting: 16-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width)
• Compliance and Certifications: ROHS3 compliance, MSL Level 1, REACH unaffected status
• Base Product Number: LM5000 series designation

The LM5000-3MTCX/NOPB is identified as the manufacturer-recommended substitute, sharing identical electrical and mechanical specifications with the main part number.

Parameter Comparison

Engineering Selection Recommendations

The LM5000-3MTCX/NOPB is the direct equivalent substitute for the LM5000-3MTCX. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters including input/output voltage ranges, switching frequency, output current capability, and package configuration.

The primary distinction between the two part numbers is product status and packaging format. The LM5000-3MTCX is designated Last Time Buy, indicating discontinued production and limited inventory availability. The LM5000-3MTCX/NOPB maintains Active status with significantly higher inventory levels (35,200 pieces versus 3,400 pieces), ensuring sustained supply chain availability.

Both parts comply with ROHS3 regulations, maintain MSL Level 1 (unlimited moisture sensitivity), and are REACH unaffected. The /NOPB suffix designation indicates lead-free plating compliance. Selection of the LM5000-3MTCX/NOPB is recommended for new designs and applications requiring long-term component availability.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The LM5000-3MTCX/NOPB is the manufacturer-recommended substitute with Active product status and higher inventory availability.

Q: What does the /NOPB suffix indicate?

A: The /NOPB suffix designates lead-free plating compliance, indicating the part meets RoHS requirements without lead-based finishes. This is a packaging and compliance designation that does not affect electrical performance.

Q: Are there packaging differences between these part numbers?

A: The LM5000-3MTCX is supplied in Cut Tape (CT) and Digi-Reel® formats, while the LM5000-3MTCX/NOPB is supplied in Tape & Reel (TR) format. Both use identical 16-TSSOP package geometry (0.173", 4.40mm Width) and are compatible with standard surface mount assembly equipment.

Q: Why is the LM5000-3MTCX designated Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this specific part number variant. The LM5000-3MTCX/NOPB remains in active production and is the recommended alternative for continued supply chain access.

Q: Are the electrical specifications identical between both parts?

A: Yes. Input voltage range (3.1V to 40V), adjustable output voltage (3.1V to 80V), output current (1.35A), switching frequency (300kHz, 700kHz), operating temperature range (-40°C to 125°C), and all other electrical parameters are identical.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, maintain MSL Level 1 (unlimited moisture sensitivity), and are REACH unaffected. These certifications are equivalent across both part numbers.