UCC3580D-2 Equivalent & Substitute Parts

Part Overview

The UCC3580D-2 is an offline switching controller IC designed for flyback and forward converter topologies in isolated power management applications. Manufactured by Texas Instruments, this 16-SOIC surface mount device integrates soft start control features and operates across a supply voltage range of 8.5V to 15V with a 15V startup threshold. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is essential for design continuity, long-term supply chain planning, and procurement of active inventory alternatives.

Substiute Parts

UCC3580D-2

Texas InstrumentsIn Stock: 1218UCC3580D-2 Datasheet

Current PartRFQ

UCC3580DTR-2

Texas InstrumentsIn Stock: 1084UCC3580DTR-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC3580D-2 is determined by strict equivalence across the following critical parameters:

• Topology Compatibility: Both main and substitute parts must support Flyback and Forward converter topologies with isolated output
• Electrical Specifications: Supply voltage range (8.5V ~ 15V), startup voltage (15V), and duty cycle (66%) must be identical
• Control Architecture: Soft start control feature must be present
• Thermal Performance: Operating temperature range (-55°C ~ 150°C) must be maintained
• Package Specification: 16-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm width)
• Regulatory Compliance: ROHS3 compliance and MSL rating must be equivalent or superior

The UCC3580DTR-2 qualifies as a manufacturer-recommended substitute based on identical electrical and mechanical specifications. The primary distinction is packaging format: the main part uses Tube packaging (Last Time Buy status), while the substitute uses Tape & Reel (TR) packaging with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The UCC3580DTR-2 is the manufacturer-recommended substitute for the UCC3580D-2. Selection criteria are based on the following factors:

Product Status: The UCC3580D-2 carries Last Time Buy status, indicating end-of-life production. The UCC3580DTR-2 maintains Active status, ensuring continued availability and supply chain stability.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and MSL ratings, satisfying environmental and handling requirements without modification.

Packaging Consideration: The substitute uses Tape & Reel (TR) packaging, which is the standard format for high-volume production and automated assembly processes. This packaging format is preferred for manufacturing continuity and cost efficiency.

Electrical and Thermal Equivalence: All critical electrical parameters, thermal operating ranges, and control features are identical, ensuring direct functional replacement without circuit redesign.

Inventory Status: The UCC3580DTR-2 maintains 983 units in new original stock, providing immediate procurement availability compared to the declining inventory of the Last Time Buy part.

Frequently Asked Questions (FAQ)

Q: Can the UCC3580DTR-2 be used as a direct replacement for the UCC3580D-2 in existing designs?

A: Yes. The UCC3580DTR-2 is electrically and mechanically identical to the UCC3580D-2. All electrical specifications, thermal ratings, package dimensions, and control features match exactly. No circuit modifications are required.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is used for lower-volume or manual assembly applications, while Tape & Reel (TR) packaging is designed for automated pick-and-place assembly. Both formats contain the same die and electrical performance. TR packaging is standard for production environments.

Q: Why is the UCC3580D-2 marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory is being depleted, and no new production runs are planned. The UCC3580DTR-2 remains in active production as the current equivalent.

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

A: No. Both parts maintain identical ROHS3 compliance, MSL rating of 1 (Unlimited), REACH Unaffected status, and identical ECCN and HTSUS classifications.

Q: What is the recommended procurement strategy?

A: For new designs or production planning, specify the UCC3580DTR-2 to ensure long-term supply availability. For existing inventory of the UCC3580D-2, the parts are interchangeable and can be used without modification until supplies are exhausted.

Q: Do the 16-SOIC package dimensions differ between the two parts?

A: No. Both parts use the identical 16-SOIC package with 0.154" (3.90mm) width. PCB footprints and assembly processes are identical.