UCC28085DR Equivalent & Substitute Parts

Part Overview

The UCC28085DR is an offline switch controller IC manufactured by Texas Instruments, designed for push-pull converter topologies. This device operates across a switching frequency range of 50kHz to 1MHz and is housed in an 8-SOIC surface mount package. The UCC28085DR is an active product with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial power management applications requiring isolated output conversion with current limiting fault protection.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical operating parameters, enabling design flexibility and supply chain optimization.

Substiute Parts

UCC28085DR

Texas InstrumentsIn Stock: 5445UCC28085DR Datasheet

Current PartRFQ

UCC28083DR

Texas InstrumentsIn Stock: 2248UCC28083DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCC28085DR is determined by strict equivalence across the following critical parameters:

• Converter Topology: Push-Pull configuration
• Supply Voltage Range: 8.3V ~ 15V
• Startup Voltage: 12.5 V
• Switching Frequency Range: 50kHz ~ 1MHz
• Duty Cycle: 49%
• Fault Protection Mechanism: Current Limiting
• Control Architecture: Frequency Control
• Output Isolation: Isolated
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package Specification: 8-SOIC (0.154", 3.90mm Width)
• Mounting Technology: Surface Mount
• Regulatory Compliance: ROHS3 Compliant, MSL 1

The UCC28083DR meets all substitution criteria as a parametric equivalent, maintaining identical electrical specifications and mechanical compatibility with the UCC28085DR.

Parameter Comparison

Engineering Selection Recommendations

Both the UCC28085DR and UCC28083DR are active products from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts should be based on:

Product Availability: The UCC28085DR maintains 5363 pieces in stock, while the UCC28083DR has 2170 pieces available. Supply chain requirements may dictate part selection based on inventory levels and lead time considerations.

Packaging Format: The UCC28085DR is supplied in standard packaging, while the UCC28083DR is available in Cut Tape (CT) and Digi-Reel® formats. Packaging selection depends on assembly volume and handling requirements.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring compatibility with industrial and commercial applications without additional qualification requirements.

Functional Equivalence: Complete parametric equivalence across all critical operating parameters—supply voltage, switching frequency, duty cycle, fault protection, and temperature range—ensures direct substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the UCC28083DR be used as a direct replacement for the UCC28085DR?

A: Yes. The UCC28083DR is a parametric equivalent with identical electrical specifications, operating ranges, and package configuration. Direct substitution is supported without circuit modification.

Q: Are there differences in the 8-SOIC package between these parts?

A: No. Both parts use the identical 8-SOIC package specification (0.154", 3.90mm Width) with surface mount mounting technology, ensuring PCB layout and assembly compatibility.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on equivalence across topology (Push-Pull), supply voltage range (8.3V ~ 15V), startup voltage (12.5 V), switching frequency (50kHz ~ 1MHz), duty cycle (49%), fault protection (Current Limiting), control features (Frequency Control), output isolation (Isolated), operating temperature (-40°C ~ 85°C), and package specification (8-SOIC).

Q: Do both parts have the same regulatory compliance status?

A: Yes. Both the UCC28085DR and UCC28083DR are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which part should be selected based on availability?

A: The UCC28085DR has higher inventory (5363 pieces) compared to the UCC28083DR (2170 pieces). For applications with immediate supply requirements, the UCC28085DR may offer shorter lead times. The UCC28083DR is available in Cut Tape and Digi-Reel formats, which may be preferred for high-volume assembly operations.

Q: Are there any performance differences between these parts?

A: No performance differences exist. Both parts operate identically across all specified electrical parameters, including frequency control, current limiting protection, and isolated output conversion.