LM2597HVM-3.3 Equivalent & Substitute Parts

Part Overview

The LM2597HVM-3.3 is a buck switching regulator IC from the 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 and is housed in an 8-SOIC surface mount package. The main part number is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

LM2597HVM-3.3

Texas InstrumentsIn Stock: 2369LM2597HVM-3.3 Datasheet

Current PartRFQ

LM2597HVM-3.3/NOPB

National SemiconductorIn Stock: 772LM2597HVM-3.3/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2597HVM-3.3 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 3.3V fixed
• Output current rating: 500mA minimum
• Input voltage range: 4.5V to 60V
• Topology: Buck (step-down) configuration
• Package: 8-SOIC surface mount form factor
• Operating temperature range: -40°C to 125°C

The LM2597HVM-3.3/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status: the main part is obsolete while the substitute remains active.

Parameter Comparison

Engineering Selection Recommendations

The LM2597HVM-3.3/NOPB is the appropriate substitute for the obsolete LM2597HVM-3.3. Both parts share identical electrical and mechanical specifications, ensuring direct compatibility in existing circuit designs. The substitute part maintains active product status, providing assured availability and ongoing manufacturer support. The "/NOPB" suffix indicates lead-free packaging compliance, reflecting current manufacturing standards. Selection of the active substitute eliminates obsolescence risk while preserving all functional and performance characteristics of the original design.

Frequently Asked Questions (FAQ)

Q: Can the LM2597HVM-3.3/NOPB be used as a direct replacement for the LM2597HVM-3.3?

A: Yes. Both parts are electrically and mechanically identical. They share the same output voltage (3.3V), output current (500mA), input voltage range (4.5V to 60V), switching frequency (150kHz), operating temperature range (-40°C to 125°C), and 8-SOIC package configuration. No circuit modifications are required.

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

A: The "/NOPB" designation indicates lead-free (Pb-free) packaging, reflecting compliance with current manufacturing and environmental standards.

Q: Why is the original LM2597HVM-3.3 listed as obsolete?

A: Product obsolescence is determined by the manufacturer and typically reflects end-of-life decisions. The active substitute LM2597HVM-3.3/NOPB provides equivalent functionality with assured ongoing availability.

Q: Are there any differences in PCB layout or thermal management between these parts?

A: No. Both parts use the identical 8-SOIC package footprint and thermal characteristics. Existing PCB designs require no modification.

Q: What is the significance of the 150kHz switching frequency?

A: The 150kHz switching frequency determines the size and type of external filter components required in the circuit. Both parts operate at this identical frequency, ensuring compatibility with existing external component selections.

Q: Can these parts be used in applications requiring extended temperature ranges beyond -40°C to 125°C?

A: No. Both parts are specified for operation within the -40°C to 125°C junction temperature range. Applications requiring different temperature specifications require alternative component selection.