LM2673T-5.0 Equivalent & Substitute Parts

Part Overview

The LM2673T-5.0 is a buck switching regulator IC from the SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 5V output at 3A maximum current. This device operates across an input voltage range of 8V to 40V and is housed in a TO-220-7 package with formed leads for through-hole mounting.

The LM2673T-5.0 is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, repair operations, and continued production of equipment utilizing this regulator topology.

Substiute Parts

LM2673T-5.0

Texas InstrumentsIn Stock: 2130LM2673T-5.0 Datasheet

Current PartRFQ

LM2673T-5.0/NOPB

National SemiconductorIn Stock: 7585LM2673T-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2673T-5.0 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 5V fixed
• Maximum output current rating: 3A
• Input voltage operating range: 8V to 40V minimum and maximum
• Switching frequency: 260 kHz
• Package type: TO-220-7 Formed Leads
• Mounting configuration: Through Hole
• Functional topology: Buck (step-down) converter
• Output configuration: Positive

Only components matching all of these parameters are classified as direct substitutes. The LM2673T-5.0/NOPB meets these criteria and is listed as an equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The LM2673T-5.0/NOPB is a direct functional equivalent to the LM2673T-5.0. Both devices share identical electrical specifications, thermal operating range, and physical packaging. The primary distinction is product status: the original LM2673T-5.0 is obsolete, while the LM2673T-5.0/NOPB maintains active production status.

Selection of the LM2673T-5.0/NOPB is appropriate for applications requiring continued supply of this buck regulator topology. The active product status ensures ongoing availability and manufacturing support. Both variants comply with identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Frequently Asked Questions (FAQ)

Q: Can the LM2673T-5.0/NOPB be used as a direct replacement for the LM2673T-5.0?

A: Yes. Both devices are electrically and mechanically identical across all specified parameters, including output voltage, current rating, input voltage range, switching frequency, and TO-220-7 package configuration.

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

A: The "/NOPB" designation indicates lead-free (No Plumbum/No Lead) compliance in the packaging and manufacturing process. This does not affect electrical performance or functional compatibility.

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

A: Both parts share identical ECCN and HTSUS classifications. Compliance status is equivalent for export and regulatory purposes.

Q: What is the inventory status of these substitute parts?

A: The LM2673T-5.0/NOPB is available in active production with current stock levels. The original LM2673T-5.0 is obsolete and subject to limited availability.

Q: Can this regulator be used in new designs?

A: The LM2673T-5.0/NOPB, being an active product, is suitable for new designs. The original LM2673T-5.0 should not be specified for new applications due to obsolete status.