LM2597HVMX-3.3 Equivalent & Substitute Parts

Part Overview

The LM2597HVMX-3.3 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 3.3V output and 500mA current capacity. This component operates across a wide input voltage range of 4.5V to 60V, making it suitable for diverse power management applications requiring regulated 3.3V rails.

The LM2597HVMX-3.3 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

LM2597HVMX-3.3

Texas InstrumentsIn Stock: 826LM2597HVMX-3.3 Datasheet

Current PartRFQ

LM2597HVMX-3.3/NOPB

Texas InstrumentsIn Stock: 1060LM2597HVMX-3.3/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2597HVMX-3.3 is determined by strict equivalence across the following electrical and mechanical parameters:

• Fixed output voltage of 3.3V
• Output current rating of 500mA
• Input voltage range of 4.5V to 60V minimum and maximum
• Switching frequency of 150kHz
• Buck topology with positive output configuration
• Single output configuration
• 8-SOIC package with 0.154" (3.90mm) width
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C

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 equivalence but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

The LM2597HVMX-3.3/NOPB is the direct electrical and mechanical equivalent of the LM2597HVMX-3.3. Both components share identical electrical specifications, package geometry, and thermal characteristics.

The primary distinction between these parts is product lifecycle status and regulatory compliance. The LM2597HVMX-3.3 is classified as obsolete, while the LM2597HVMX-3.3/NOPB maintains active production status. The substitute part carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. Both parts maintain REACH Unaffected status.

For new designs or production continuity, the LM2597HVMX-3.3/NOPB is the appropriate selection due to its active manufacturing status and current regulatory compliance. The packaging format difference (tape and reel versus bulk) does not affect functional performance and is determined by procurement volume and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Are the LM2597HVMX-3.3 and LM2597HVMX-3.3/NOPB electrically identical?

A: Yes. Both parts are manufactured by Texas Instruments and share identical electrical specifications, including 3.3V fixed output, 500mA current capacity, 4.5V to 60V input range, 150kHz switching frequency, and -40°C to 125°C operating temperature range.

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

A: The "/NOPB" suffix indicates the part is supplied in tape and reel packaging format without plating on the leads. This is a packaging and delivery specification that does not affect electrical performance or pin compatibility.

Q: Can I use LM2597HVMX-3.3/NOPB as a direct replacement in existing designs?

A: Yes. The LM2597HVMX-3.3/NOPB is a direct pin-for-pin and functionally equivalent substitute. No circuit modifications or PCB layout changes are required. The 8-SOIC package dimensions are identical.

Q: Why is the original LM2597HVMX-3.3 marked as obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and production decisions. The LM2597HVMX-3.3/NOPB remains in active production and is the recommended selection for ongoing designs.

Q: What is the difference in RoHS compliance between these parts?

A: The LM2597HVMX-3.3 is RoHS non-compliant, while the LM2597HVMX-3.3/NOPB is ROHS3 compliant. For applications requiring RoHS compliance certification, the LM2597HVMX-3.3/NOPB is the appropriate choice.

Q: Are there inventory differences between these parts?

A: Current inventory levels may vary. The LM2597HVMX-3.3 shows 723 pieces in stock, while the LM2597HVMX-3.3/NOPB shows 1043 pieces in stock. Inventory availability should be verified at the time of procurement.

Q: Can I mix packaging formats in the same production run?

A: Both parts are electrically and mechanically identical. Mixing bulk and tape & reel formats in the same production run is technically feasible but may require separate handling procedures depending on assembly equipment and process specifications.