LM5070MTC-80 Equivalent & Substitute Parts

Part Overview

The LM5070MTC-80 is a Power Over Ethernet (PoE) Controller designed for single-channel 802.3af applications in a 16-TSSOP surface mount package. This component functions as a Power Delivery (PD) controller with integrated DC/DC conversion capabilities, operating across a wide supply voltage range of 1.8V to 75V and temperature range of -40°C to 125°C.

The main part number LM5070MTC-80 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.

Substiute Parts

LM5070MTC-80

Texas InstrumentsIn Stock: 2369LM5070MTC-80 Datasheet

Current PartRFQ

LM5070MTC-80/NOPB

Texas InstrumentsIn Stock: 3798LM5070MTC-80/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5070MTC-80 is determined by strict alignment across the following critical parameters:

• Functional Type: Controller (PD), DC/DC with single-channel architecture
• Standards Compliance: 802.3af (PoE) certification
• Electrical Specifications: Supply voltage range 1.8V ~ 75V; operating temperature -40°C ~ 125°C
• Package Compatibility: 16-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width)
• Internal Architecture: Both internal switches present; no auxiliary sense functionality

The substitute part LM5070MTC-80/NOPB meets all these criteria while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LM5070MTC-80/NOPB is the direct substitute for the obsolete LM5070MTC-80. Both components share identical electrical specifications, functional architecture, and package geometry, ensuring pin-for-pin and functional compatibility.

The substitute part offers the following advantages:

• Active Product Status: LM5070MTC-80/NOPB maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Compliance Certification: The substitute achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. This addresses regulatory requirements for new designs and procurement in restricted substance environments.
• Inventory Availability: Higher stock levels (3700 Pcs vs. 2300 Pcs) support immediate procurement needs.

Selection between these parts should be based on regulatory compliance requirements and supply chain strategy. For applications requiring RoHS3 compliance or long-term component availability, the LM5070MTC-80/NOPB is the appropriate choice.

Frequently Asked Questions (FAQ)

Q: Are LM5070MTC-80 and LM5070MTC-80/NOPB electrically identical?

A: Yes. Both parts share identical electrical specifications, including supply voltage range (1.8V ~ 75V), operating temperature range (-40°C ~ 125°C), channel count (1), and 802.3af PoE standards compliance. Internal switch configuration and auxiliary sense functionality are also identical.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (Obsolete vs. Active), RoHS compliance (non-compliant vs. ROHS3 compliant), and packaging format (unspecified vs. Tube). The "/NOPB" suffix indicates lead-free, halogen-free packaging in compliance with RoHS3 standards.

Q: Can I use LM5070MTC-80/NOPB as a direct replacement in existing designs?

A: Yes. The LM5070MTC-80/NOPB is a direct pin-for-pin and functional substitute. No circuit modifications or PCB layout changes are required. The 16-TSSOP package dimensions are identical.

Q: Why is the main part marked as Obsolete?

A: The LM5070MTC-80 has reached end-of-life status. Texas Instruments has transitioned production to the LM5070MTC-80/NOPB variant, which incorporates RoHS3 compliance and lead-free manufacturing standards.

Q: Does the RoHS3 compliance of the substitute affect circuit performance?

A: No. RoHS3 compliance reflects manufacturing process changes (lead-free solder, halogen-free materials) and does not alter electrical performance, functional behavior, or operating specifications.

Q: Are there any package compatibility concerns?

A: No. Both parts use the 16-TSSOP package with identical physical dimensions (0.173" width, 4.40mm). PCB footprints and assembly processes remain unchanged.