LM5072MH-80 Equivalent & Substitute Parts

Part Overview

The LM5072MH-80 is a Power Over Ethernet (PoE) Controller designed for 802.3af compliant applications. This integrated circuit manages single-channel power delivery in a 16-HTSSOP surface mount package. The main part is classified as Obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

LM5072MH-80

Texas InstrumentsIn Stock: 5784LM5072MH-80 Datasheet

Current PartRFQ

LM5072MH-80/NOPB

National SemiconductorIn Stock: 1795LM5072MH-80/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5072MH-80 is determined by the following critical parameters:

• Functional Type: Controller (PD), DC/DC with single-channel PoE management
• Standards Compliance: 802.3af (PoE) standard
• Number of Channels: 1 channel configuration
• Power Rating: 12.95 W maximum
• Internal Switching Architecture: Both internal switches present
• Auxiliary Sense Capability: Required
• Supply Voltage Range: 9V ~ 70V
• Maximum Supply Current: 2mA
• Operating Temperature Range: -40°C ~ 125°C
• Package Type: 16-PowerTSSOP (16-HTSSOP)
• Mounting Technology: Surface Mount

The substitute part LM5072MH-80/NOPB meets all these parameters identically, establishing direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The LM5072MH-80/NOPB is the direct functional equivalent for the obsolete LM5072MH-80. Both parts share identical electrical specifications, package geometry, and 802.3af PoE compliance. The primary distinction is product status: the substitute maintains Active status, ensuring continued availability and manufacturing support.

For applications currently using the LM5072MH-80, the LM5072MH-80/NOPB provides pin-for-pin and functional compatibility without design modification. The Active product status of the substitute part eliminates obsolescence risk in new procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can the LM5072MH-80/NOPB replace the LM5072MH-80 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. Pin configuration, package footprint, and functional performance are equivalent. No PCB redesign is required.

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

A: The "/NOPB" designation indicates the part is supplied without lead (Pb) plating, reflecting RoHS compliance in the manufacturing process. This does not affect electrical or mechanical compatibility.

Q: Are there any compliance or certification differences between these parts?

A: Both parts comply with 802.3af PoE standards and operate within identical electrical parameters. Compliance certifications (ECCN: EAR99, HTSUS: 8542.39.0001) are equivalent.

Q: Why is the main part marked as Obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The substitute part maintains Active status, ensuring long-term availability for procurement and design continuity.

Q: Is the 16-HTSSOP package still in production?

A: The 16-PowerTSSOP (16-HTSSOP) package remains standard for this device class. The substitute part is available in this package configuration with confirmed inventory.