UCC28085D Equivalent & Substitute Parts

Part Overview

The UCC28085D is an offline switch controller IC designed for push-pull converter topologies, operating across a frequency range of 50kHz to 1MHz. This Texas Instruments power management component is packaged in 8-SOIC surface mount configuration and provides isolated output with current limiting fault protection and frequency control features. The UCC28085D is designated as Last Time Buy, making identification of functionally equivalent alternatives essential for design continuity and long-term supply chain planning.

Substiute Parts

UCC28085D

Texas InstrumentsIn Stock: 882UCC28085D Datasheet

Current PartRFQ

UCC28085DR

Texas InstrumentsIn Stock: 5445UCC28085DR Datasheet

MFR RecommendedRFQ

UCC28083D

Texas InstrumentsIn Stock: 3409UCC28083D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCC28085D is determined by strict alignment across the following critical parameters:

Topology & Functional Requirements: Push-pull converter topology with isolated output and frequency control capability

Electrical Specifications: Voltage supply range 8.3V ~ 15V, startup voltage 12.5V, switching frequency 50kHz ~ 1MHz, duty cycle 49%, current limiting fault protection

Physical & Environmental Compatibility: 8-SOIC surface mount package (0.154", 3.90mm width), operating temperature -40°C ~ 85°C, MSL 1 rating

Regulatory Compliance: ROHS3 compliant, REACH unaffected status

The UCC28085D has two identified equivalents: UCC28085DR (manufacturer recommended, active product status) and UCC28083D (parametric equivalent, last time buy status). Both maintain identical electrical and physical specifications, differing only in packaging format (tape/reel vs. tube) and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

UCC28085DR is the primary recommended substitute for UCC28085D applications. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The UCC28085DR carries Active product status, ensuring continued availability and supply chain stability. This part is supplied in tape/reel packaging format, standard for high-volume production environments. ROHS3 compliance and MSL 1 rating are maintained.

UCC28083D serves as a parametric equivalent with identical functional and electrical characteristics. However, this part shares Last Time Buy status with the original UCC28085D, limiting its utility for long-term supply planning. The UCC28083D is available in tube packaging. Selection of this alternative should be restricted to applications where immediate availability takes precedence over future supply assurance.

Both substitutes are qualified for identical operating conditions: -40°C to 85°C temperature range, 8.3V to 15V supply voltage, and 50kHz to 1MHz switching frequency operation.

Frequently Asked Questions (FAQ)

Q: Can UCC28085DR be used as a direct replacement for UCC28085D in existing designs?

A: Yes. The UCC28085DR is electrically and mechanically identical to UCC28085D. Both parts feature the same 8-SOIC package, voltage specifications, frequency range, and control characteristics. The primary difference is packaging format (tape/reel vs. tube) and product lifecycle status (Active vs. Last Time Buy).

Q: What is the difference between UCC28085D and UCC28083D?

A: Both parts are parametrically equivalent with identical electrical specifications, topology, and package configuration. The distinction lies in the base product number (UCC28085 vs. UCC28083) and product status. Both are designated Last Time Buy, indicating limited future availability.

Q: Are there any thermal or environmental differences between these parts?

A: No. All three parts operate across the identical temperature range (-40°C to 85°C) and carry the same MSL 1 rating, indicating unlimited moisture sensitivity protection.

Q: Which substitute should be selected for new production designs?

A: UCC28085DR is the appropriate choice for new designs. Its Active product status ensures sustained manufacturing and supply availability, supporting long-term production requirements.

Q: Is PCB layout modification required when substituting these parts?

A: No. All three parts use the identical 8-SOIC package footprint (0.154", 3.90mm width), eliminating the need for PCB redesign or layout changes.

Q: Do all three parts meet the same regulatory compliance standards?

A: Yes. UCC28085D, UCC28085DR, and UCC28083D are all ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.