UCC28631DR Equivalent & Substitute Parts

Part Overview

The UCC28631DR is an offline switch flyback converter IC manufactured by Texas Instruments, designed for isolated power management applications. This 7-SOIC package device operates across a 200Hz to 120kHz switching frequency range with 30W power handling capability. The component is currently in active production status with robust fault protection including current limiting, overload, overvoltage, and overtemperature protection. Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or equivalent functional requirements.

Substiute Parts

UCC28631DR

Texas InstrumentsIn Stock: 3854UCC28631DR Datasheet

Current PartRFQ

UCC28633DR

Texas InstrumentsIn Stock: 3412UCC28633DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The UCC28633DR qualifies as a parametric equivalent to the UCC28631DR based on strict alignment across all critical electrical and mechanical parameters. Substitution eligibility is determined by matching the following key criteria:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage Supply Range: 8V ~ 20V
• Voltage Start Up: 14.75 V
• Switching Frequency Range: 200Hz ~ 120kHz
• Power Rating: 30 W
• Duty Cycle: 70%
• Operating Temperature Range: -40°C ~ 125°C (TJ)
• Package Configuration: 8-SOIC (0.154", 3.90mm Width), 7 Leads
• Fault Protection Features: Current Limiting, Over Load, Over Temperature, Over Voltage
• Compliance: ROHS3 Compliant, REACH Unaffected
• Product Status: Active

Parameter Comparison

Engineering Selection Recommendations

Both UCC28631DR and UCC28633DR maintain active production status with full ROHS3 compliance and REACH unaffected certification. Selection between these components is based on availability and supply chain requirements rather than functional differentiation. The UCC28631DR currently maintains higher inventory levels at 3818 pieces. The UCC28633DR provides an equivalent alternative with 3325 pieces in stock. Both components satisfy identical electrical specifications, thermal operating ranges, and fault protection requirements for offline flyback converter applications requiring isolated 30W power delivery.

Frequently Asked Questions (FAQ)

Q: Can UCC28633DR replace UCC28631DR in existing designs? A: Yes. The UCC28633DR is a parametric equivalent with identical electrical specifications, switching characteristics, power rating, operating temperature range, and 8-SOIC package configuration. No circuit redesign is required.

Q: Are there any package differences between these parts? A: No. Both components use the same 8-SOIC (0.154", 3.90mm Width) package with 7 leads, ensuring identical PCB footprint and mounting requirements.

Q: Do both parts meet the same compliance standards? A: Yes. Both UCC28631DR and UCC28633DR are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: What determines substitution eligibility for these offline flyback converters? A: Substitution is valid when components match across topology, isolation configuration, supply voltage range, switching frequency range, power rating, duty cycle, operating temperature range, package type, and fault protection features.

Q: Are there any thermal or reliability differences? A: No. Both components operate across the identical -40°C to 125°C junction temperature range with equivalent fault protection mechanisms including current limiting, overload, overvoltage, and overtemperature protection.