UCC28782ARTWR Equivalent & Substitute Parts

Part Overview

The UCC28782ARTWR is an offline switch flyback converter IC manufactured by Texas Instruments, designed for isolated power management applications. This device operates at 420kHz switching frequency and integrates current limiting, over-temperature, over-voltage, and short-circuit protection. The UCC28782ARTWR is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The primary substitute maintains identical electrical and mechanical specifications while offering improved product lifecycle status.

Substiute Parts

UCC28782ARTWR

Texas InstrumentsIn Stock: 3183UCC28782ARTWR Datasheet

Current PartRFQ

UCC28782ARTWT

Texas InstrumentsIn Stock: 1347UCC28782ARTWT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC28782ARTWR is determined by the following critical parameters that must remain constant across equivalent parts:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage Supply Range: 14V ~ 34V input specification
• Switching Frequency: 420kHz operation
• Fault Protection Features: Current limiting, over-temperature, over-voltage, and short-circuit protection
• Operating Temperature Range: -40°C ~ 125°C (TJ)
• Package Configuration: 24-WFQFN Exposed Pad, 24-WQFN (4x4) form factor
• Mounting Type: Surface Mount
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The UCC28782ARTWT qualifies as a parametric equivalent based on identical electrical specifications and mechanical compatibility. The primary distinction between these parts is packaging format and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The UCC28782ARTWT is the direct parametric equivalent for the obsolete UCC28782ARTWR. Both devices share identical electrical specifications, thermal characteristics, and mechanical package dimensions. Selection between these parts is determined by application requirements and supply chain considerations:

For New Designs and Production: The UCC28782ARTWT is the appropriate selection due to active product status, ensuring long-term availability and manufacturing support from Texas Instruments. This part maintains full compatibility with existing PCB layouts and design specifications.

Packaging and Handling: The UCC28782ARTWT is supplied in Tape & Reel (TR) format with MSL 1 (Unlimited shelf life), compared to the Cut Tape (CT) & Digi-Reel® format with MSL 2 (1 Year shelf life) of the UCC28782ARTWR. The improved moisture sensitivity rating of the substitute part provides extended storage capability without degradation.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying environmental and regulatory requirements for industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can the UCC28782ARTWT be used as a direct replacement for the UCC28782ARTWR?

A: Yes. The UCC28782ARTWT is a parametric equivalent with identical electrical specifications, operating characteristics, and package dimensions. PCB layouts, thermal management, and circuit designs require no modification.

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

A: The primary differences are product lifecycle status and packaging format. The UCC28782ARTWR is obsolete and supplied in Cut Tape format, while the UCC28782ARTWT is active and supplied in Tape & Reel format. Electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with the 24-WQFN (4x4) package?

A: No. Both parts use the identical 24-WFQFN Exposed Pad package in 4x4mm form factor. Surface mount assembly processes, solder reflow profiles, and PCB footprints are fully compatible.

Q: Does the improved MSL rating of the UCC28782ARTWT affect circuit performance?

A: No. The MSL rating indicates moisture sensitivity for storage and handling only. The MSL 1 (Unlimited) rating of the substitute part provides extended shelf life without affecting electrical performance or reliability in operation.

Q: What switching frequency does this device operate at?

A: Both the UCC28782ARTWR and UCC28782ARTWT operate at 420kHz switching frequency, maintaining identical power conversion efficiency and thermal characteristics.

Q: Is this device suitable for isolated power applications?

A: Yes. Both parts feature isolated output configuration with integrated flyback topology, appropriate for applications requiring galvanic isolation between input and output stages.

Q: What fault protection mechanisms are integrated into this IC?

A: Both devices integrate current limiting, over-temperature protection, over-voltage protection, and short-circuit protection, providing comprehensive safeguards against fault conditions.