LM2594HVMX-ADJ/S5000250 Equivalent & Substitute Parts

Part Overview

The LM2594HVMX-ADJ/S5000250 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion applications. This device delivers positive adjustable output voltage from 1.2V to 37V with 500mA output current capability, operating across a wide input voltage range of 4.5V to 60V. The part is classified as Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

LM2594HVMX-ADJ/S5000250

Texas InstrumentsIn Stock: 717LM2594HVMX-ADJ/S5000250 Datasheet

Current PartRFQ

LM2594HVMX-ADJ/NOPB

Texas InstrumentsIn Stock: 30810LM2594HVMX-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2594HVMX-ADJ/S5000250 is determined by strict alignment of the following critical parameters:

Electrical Compatibility Requirements:

• Identical topology (Buck/Step-Down)
• Matching output configuration (Positive Adjustable)
• Identical switching frequency (150kHz)
• Equivalent output current rating (500mA)
• Compatible input voltage range (minimum 4.5V, maximum 60V)
• Compatible output voltage adjustment range (minimum 1.2V floor)

Mechanical & Environmental Compatibility:

• Identical package type (8-SOIC, 0.154", 3.90mm Width)
• Matching operating temperature range (-40°C to 125°C)
• Equivalent moisture sensitivity level (MSL 1)

Regulatory & Compliance:

• ROHS3 compliance maintained
• Identical ECCN and HTSUS classifications

The substitute part LM2594HVMX-ADJ/NOPB meets all substitution criteria and is classified as the manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The LM2594HVMX-ADJ/NOPB is the direct manufacturer-recommended substitute for the LM2594HVMX-ADJ/S5000250. Selection of this substitute is justified on the following engineering grounds:

Product Status Consideration: The main part number is designated Last Time Buy, indicating end-of-life status. The substitute maintains Active product status, ensuring continued availability and long-term supply chain support.

Electrical Equivalence: All critical electrical parameters are identical: 500mA output current, 150kHz switching frequency, 4.5V to 60V input range, and 1.2V minimum adjustable output voltage. The substitute's extended maximum output voltage (57V versus 37V) provides additional design flexibility without compromising compatibility for existing applications.

Compliance & Certification: Both parts maintain ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001). Moisture sensitivity level and operating temperature specifications are equivalent.

Packaging & Mechanical Compatibility: Identical 8-SOIC package specifications ensure direct PCB layout compatibility and no redesign requirements.

Inventory & Availability: The substitute part maintains significantly higher inventory levels (30,715 pieces versus 678 pieces), supporting immediate procurement and reducing supply risk.

Frequently Asked Questions (FAQ)

Q: Can LM2594HVMX-ADJ/NOPB be used as a direct replacement for LM2594HVMX-ADJ/S5000250 without PCB modifications?

A: Yes. Both parts share identical package specifications (8-SOIC, 0.154", 3.90mm Width), pinout, and electrical characteristics. No PCB layout changes are required for substitution.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging format and product status. LM2594HVMX-ADJ/S5000250 is supplied in reel format (Last Time Buy status), while LM2594HVMX-ADJ/NOPB is supplied in Cut Tape and Digi-Reel® formats (Active status). The "/NOPB" suffix indicates lead-free, RoHS-compliant packaging without plumbum (lead).

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate at identical switching frequency (150kHz), deliver 500mA output current, and accept 4.5V to 60V input voltage. The substitute's extended output voltage range (to 57V) does not affect applications designed for the original 37V maximum.

Q: What is the significance of the Last Time Buy status?

A: Last Time Buy indicates the manufacturer will no longer produce the LM2594HVMX-ADJ/S5000250 after existing inventory is depleted. Substitution to the Active LM2594HVMX-ADJ/NOPB ensures continued component availability for future production runs and design revisions.

Q: Are both parts RoHS compliant?

A: Yes. Both LM2594HVMX-ADJ/S5000250 and LM2594HVMX-ADJ/NOPB are ROHS3 compliant and maintain identical moisture sensitivity levels (MSL 1, Unlimited).

Q: Can I mix these parts in the same production batch?

A: Yes. Electrical and mechanical specifications are identical, permitting interchangeable use within the same assembly or production run without functional impact.