LM2597MX-5.0 Equivalent & Substitute Parts

Part Overview

The LM2597MX-5.0 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 5V output and 500mA current capacity. This device operates across a wide input voltage range of 4.5V to 40V and is housed in an 8-SOIC surface mount package.

The LM2597MX-5.0 carries an obsolete product status. Identifying equivalent and 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

LM2597MX-5.0

Texas InstrumentsIn Stock: 4385LM2597MX-5.0 Datasheet

Current PartRFQ

LM2597MX-5.0/NOPB

Texas InstrumentsIn Stock: 1633LM2597MX-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2597MX-5.0 is determined by strict alignment across the following electrical and mechanical parameters:

• Output voltage configuration (5V fixed)
• Output current rating (500mA)
• Input voltage operating range (4.5V to 40V minimum and maximum)
• Switching frequency (150kHz)
• Package type and pinout (8-SOIC, 0.154" width)
• Operating temperature range (-40°C to 125°C)
• Topology (buck converter, positive output, single output)

Parts meeting all these criteria are classified as direct substitutes. Variations in packaging format (such as tape and reel versus bulk) do not affect electrical compatibility and are considered equivalent for component selection purposes.

Parameter Comparison

Engineering Selection Recommendations

The LM2597MX-5.0/NOPB is the direct substitute for the LM2597MX-5.0. Both parts are manufactured by Texas Instruments and share identical electrical specifications, output characteristics, and package geometry.

The primary distinction is product lifecycle status: the LM2597MX-5.0 is obsolete, while the LM2597MX-5.0/NOPB maintains active production status. The substitute part also carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. For new designs or production requiring regulatory compliance, the LM2597MX-5.0/NOPB is the appropriate selection.

Both parts are classified as REACH Unaffected and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) designations, confirming regulatory equivalence for export and trade purposes.

Frequently Asked Questions (FAQ)

Q: Can the LM2597MX-5.0/NOPB be used as a direct replacement for the LM2597MX-5.0 in existing designs?

A: Yes. The LM2597MX-5.0/NOPB is electrically and mechanically identical to the LM2597MX-5.0. All electrical parameters, output specifications, and package dimensions are equivalent. No circuit modifications are required.

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

A: The "/NOPB" suffix denotes the packaging format: Cut Tape (CT) and Digi-Reel® configuration. This is a packaging and distribution variant only and does not affect the component's electrical performance or compatibility.

Q: Why is the LM2597MX-5.0 listed as obsolete?

A: Product obsolescence reflects Texas Instruments' lifecycle management. The LM2597MX-5.0/NOPB remains in active production and is the recommended part for new designs and ongoing procurement.

Q: Are there compliance differences between these parts?

A: Yes. The LM2597MX-5.0/NOPB is ROHS3 compliant, while the original LM2597MX-5.0 is RoHS non-compliant. For applications requiring RoHS compliance, the substitute part is the appropriate choice.

Q: Is the 8-SOIC package pinout identical between both parts?

A: Yes. Both parts use the same 8-SOIC (0.154", 3.90mm Width) package with identical pinout and footprint. PCB designs require no modification.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.