UCC28084P Equivalent & Substitute Parts

Part Overview

The UCC28084P is a Half-Bridge, Push-Pull Regulator controller IC manufactured by Texas Instruments, designed for positive output Step-Up/Step-Down DC-DC conversion applications. This device functions as a transistor driver with integrated current limit and frequency control features, operating across a 4.1V to 15V supply voltage range.

The UCC28084P is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance. Substitute parts must maintain electrical and mechanical compatibility while accommodating packaging and availability constraints.

Substiute Parts

UCC28084P

Texas InstrumentsIn Stock: 2253UCC28084P Datasheet

Current PartRFQ

UCC28084D

Texas InstrumentsIn Stock: 1133UCC28084D Datasheet

MFR RecommendedRFQ

UCC28086P

Texas InstrumentsIn Stock: 852UCC28086P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UCC28084P are qualified based on strict electrical and mechanical parameter matching:

Electrical Compatibility Criteria:

• Identical topology (Half-Bridge, Push-Pull)
• Identical function (Step-Up/Step-Down)
• Identical output type (Transistor Driver)
• Identical output configuration (Positive)
• Identical number of outputs (2)
• Identical supply voltage range (4.1V ~ 15V)
• Identical switching frequency (200kHz)
• Identical maximum duty cycle (49%)
• Identical synchronous rectifier capability (Yes)
• Identical control features (Current Limit, Frequency Control)
• Identical operating temperature range (-40°C ~ 85°C)

Mechanical Compatibility Criteria:

• Package compatibility (Through Hole 8-DIP or Surface Mount 8-SOIC variants)
• Pin count and pinout alignment

Compliance Criteria:

• RoHS3 compliance maintained
• MSL rating compatibility (1 - Unlimited)

The UCC28084P has two qualified substitutes: UCC28084D (surface mount variant) and UCC28086P (parametric equivalent in through-hole packaging).

Parameter Comparison

Engineering Selection Recommendations

UCC28084D Selection: The UCC28084D is the manufacturer-recommended substitute for the UCC28084P. This variant maintains all electrical specifications while offering surface mount packaging (8-SOIC). Selection of UCC28084D is appropriate for new designs or production transitions requiring surface mount assembly. The device carries Last Time Buy status, indicating limited future availability. RoHS3 compliance and MSL rating 1 are maintained.

UCC28086P Selection: The UCC28086P is a parametric equivalent offering identical electrical performance and through-hole packaging (8-DIP) matching the original UCC28084P form factor. This variant is suitable for applications requiring through-hole mounting compatibility. The device carries Obsolete status. RoHS3 compliance and MSL rating 1 are maintained.

Availability Considerations: Current inventory levels are: UCC28084P (2200 pcs), UCC28084D (1101 pcs), and UCC28086P (769 pcs). Selection should account for production volume requirements and long-term supply chain planning given the Obsolete and Last Time Buy status classifications.

Frequently Asked Questions (FAQ)

Q: Can UCC28084D replace UCC28084P in existing designs? A: UCC28084D is electrically equivalent to UCC28084P. The primary difference is packaging: UCC28084D uses surface mount 8-SOIC while UCC28084P uses through-hole 8-DIP. PCB layout and assembly process modifications are required for substitution.

Q: What is the difference between UCC28084P and UCC28086P? A: Both devices are parametric equivalents with identical electrical specifications and through-hole 8-DIP packaging. The primary distinction is the base product number (UCC28084 versus UCC28086). Both maintain full compatibility with the same application requirements.

Q: Are all substitutes RoHS3 compliant? A: Yes. UCC28084P, UCC28084D, and UCC28086P are all ROHS3 Compliant with MSL rating 1 (Unlimited), ensuring compliance with environmental and regulatory requirements.

Q: What mounting considerations apply when selecting a substitute? A: UCC28084P and UCC28086P require through-hole mounting on PCBs with DIP sockets or through-hole pads. UCC28084D requires surface mount assembly with SOIC footprints. Existing through-hole designs cannot directly accommodate UCC28084D without PCB redesign.

Q: Are there supply chain implications for these substitutes? A: UCC28084P and UCC28086P are classified as Obsolete, while UCC28084D is Last Time Buy. Long-term availability is limited for all variants. Production planning should account for current inventory levels and establish alternative sourcing strategies.

Q: Do all substitutes operate at the same switching frequency? A: Yes. All three devices operate at 200kHz switching frequency with 49% maximum duty cycle, ensuring functional compatibility in Half-Bridge, Push-Pull topologies.