UCC28251RGPR Equivalent & Substitute Parts

Part Overview

The UCC28251RGPR is an active, production-status Power Management IC (PMIC) from Texas Instruments designed for multi-topology DC-DC controller applications. This 20-QFN surface-mount regulator controller supports Full-Bridge, Half-Bridge, and Push-Pull topologies with positive output step-up/step-down functionality. The device operates across a 4.7V to 17V supply range and generates PWM control signals with integrated current limiting, frequency control, and soft-start features. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set.

Substiute Parts

UCC28251RGPR

Texas InstrumentsIn Stock: 6220UCC28251RGPR Datasheet

Current PartRFQ

UCC28250RGPR

Texas InstrumentsIn Stock: 3259UCC28250RGPR Datasheet

Parametric EquivalentRFQ

UCC28250RGPT

Texas InstrumentsIn Stock: 2272UCC28250RGPT Datasheet

Parametric EquivalentRFQ

UCC28251RGPT

Texas InstrumentsIn Stock: 1122UCC28251RGPT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCC28251RGPR is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Manufacturer: Texas Instruments
• Package / Case: 20-VFQFN Exposed Pad
• Supplier Device Package: 20-QFN (4x4)
• Mounting Type: Surface Mount
• Output Type: PWM Signal
• Function: Step-Up/Step-Down
• Output Configuration: Positive
• Topology: Full-Bridge, Half-Bridge, Push-Pull
• Number of Outputs: 2
• Output Phases: 1
• Voltage - Supply (Vcc/Vdd): 4.7V ~ 17V
• Synchronous Rectifier: Yes
• Control Features: Current Limit, Enable, Frequency Control, Ramp, Soft Start
• Operating Temperature: -40°C ~ 125°C (TJ)
• Product Status: Active
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 2 (1 Year)

Variable Parameters (Allowed Differences):

• Frequency - Switching: May vary between 42kHz ~ 945kHz and 85kHz ~ 1.15MHz
• Base Product Number: UCC28251 or UCC28250 series

The three identified substitutes (UCC28250RGPR, UCC28250RGPT, UCC28251RGPT) maintain full equivalence across all mandatory parameters while operating within their specified switching frequency ranges.

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active product status with ROHS3 compliance and identical MSL ratings, ensuring regulatory and environmental compatibility. Selection between UCC28251RGPR and its substitutes depends on application-specific switching frequency requirements:

UCC28251RGPR and UCC28251RGPT operate within the 42kHz to 945kHz switching frequency range, suitable for applications requiring lower frequency operation or broader frequency tuning capability.

UCC28250RGPR and UCC28250RGPT operate within the 85kHz to 1.15MHz switching frequency range, appropriate for applications requiring higher switching frequencies or narrower frequency bands.

Packaging designation differences (RGPR vs. RGPT) indicate tape-and-reel configuration variations; both are surface-mount compatible with identical 20-QFN (4x4) footprints. Inventory availability varies across all four parts, with UCC28251RGPR maintaining the highest stock level at 6162 units.

Frequently Asked Questions (FAQ)

Q: Can UCC28250RGPR replace UCC28251RGPR in an existing design?

A: UCC28250RGPR is electrically and mechanically equivalent to UCC28251RGPR across all mandatory parameters. The primary difference is the switching frequency range: UCC28250RGPR operates at 85kHz ~ 1.15MHz versus UCC28251RGPR at 42kHz ~ 945kHz. Substitution is valid if the application's frequency requirements fall within the UCC28250RGPR range.

Q: What is the difference between RGPR and RGPT packaging designations?

A: Both RGPR and RGPT are tape-and-reel surface-mount packages with identical 20-QFN (4x4) footprints and electrical characteristics. The designation difference reflects tape-and-reel configuration variations; both are suitable for automated assembly processes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. UCC28251RGPR, UCC28250RGPR, UCC28250RGPT, and UCC28251RGPT are all ROHS3 compliant with MSL rating 2 (1 Year), meeting identical environmental and regulatory requirements.

Q: Which substitute part should be selected for highest inventory availability?

A: UCC28251RGPR maintains the highest inventory at 6162 units. Among substitutes, UCC28250RGPR provides the next highest availability at 3200 units.

Q: Can these parts be used interchangeably in multi-topology DC-DC applications?

A: Yes. All four parts support identical topologies (Full-Bridge, Half-Bridge, Push-Pull) with positive output step-up/step-down functionality. Interchangeability is confirmed across all mandatory electrical and mechanical parameters, subject to application-specific switching frequency requirements.